diff --git a/asm/macros/battle_script.inc b/asm/macros/battle_script.inc
index 69e45ddea..66c82f39e 100644
--- a/asm/macros/battle_script.inc
+++ b/asm/macros/battle_script.inc
@@ -1022,7 +1022,7 @@
 	.4byte \ptr
 	.endm
 
-	.macro trydobeatup endPtr:req, failPtr:req
+	.macro trydobeatup endPtr=NULL, failPtr=NULL
 	.byte 0xc4
 	.4byte \endPtr
 	.4byte \failPtr
@@ -1941,6 +1941,31 @@
 	.macro shellsidearmcheck
 	various BS_ATTACKER, VARIOUS_SHELL_SIDE_ARM_CHECK
 	.endm
+	
+	.macro jumpifrodaffected battler:req, ptr:req
+	various \battler, VARIOUS_JUMP_IF_ROD
+	.4byte \ptr
+	.endm
+
+	.macro jumpifabsorbaffected battler:req, ptr:req
+	various \battler, VARIOUS_JUMP_IF_ABSORB
+	.4byte \ptr
+	.endm
+
+	.macro jumpifmotoraffected battler:req, ptr:req
+	various \battler, VARIOUS_JUMP_IF_MOTOR
+	.4byte \ptr
+	.endm
+
+	.macro jumpifteanoberry ptr:req
+	various BS_ATTACKER, VARIOUS_TEATIME_TARGETS
+	.4byte \ptr
+	.endm
+
+	.macro jumpifteainvulnerable battler:req, ptr:req
+	various \battler, VARIOUS_TEATIME_INVUL
+	.4byte \ptr
+	.endm
 
 	.macro jumpifcantfling battler:req, ptr:req
 	various \battler, VARIOUS_JUMP_IF_CANT_FLING
diff --git a/data/battle_anim_scripts.s b/data/battle_anim_scripts.s
index 1deac0890..e19f4c993 100644
--- a/data/battle_anim_scripts.s
+++ b/data/battle_anim_scripts.s
@@ -13478,7 +13478,18 @@ Move_DRAGON_DARTS::
 	end
 
 Move_TEATIME::
-	goto Move_MILK_DRINK
+	loadspritegfx ANIM_TAG_TEAPOT
+	loadspritegfx ANIM_TAG_THOUGHT_BUBBLE
+	createsprite gThoughtBubbleSpriteTemplate, ANIM_ATTACKER, 11, 0, 100
+	playsewithpan SE_M_ICY_WIND, SOUND_PAN_ATTACKER
+	delay 6
+	createsprite gTeapotSpriteTemplate, ANIM_ATTACKER, 12, 0
+	createvisualtask AnimTask_RockMonBackAndForth, 5, ANIM_ATTACKER, 2, 0
+	createvisualtask AnimTask_RockMonBackAndForth, 5, ANIM_ATK_PARTNER, 2, 0
+	delay 24
+	loopsewithpan SE_M_HEAL_BELL, SOUND_PAN_ATTACKER, 22, 3
+	waitforvisualfinish
+	end
 
 Move_OCTOLOCK::
 	loadspritegfx ANIM_TAG_TENDRILS
diff --git a/data/battle_scripts_1.s b/data/battle_scripts_1.s
index 9d307b8b9..4845b49aa 100644
--- a/data/battle_scripts_1.s
+++ b/data/battle_scripts_1.s
@@ -416,6 +416,74 @@ gBattleScriptsForMoveEffects::
 	.4byte BattleScript_EffectDoubleShock             @ EFFECT_DOUBLE_SHOCK
 	.4byte BattleScript_EffectSpecialAttackUpHit      @ EFFECT_SPECIAL_ATTACK_UP_HIT
 	.4byte BattleScript_EffectVictoryDance            @ EFFECT_VICTORY_DANCE
+	.4byte BattleScript_EffectTeatime                 @ EFFECT_TEATIME
+
+BattleScript_EffectTeatime::
+	attackcanceler
+	attackstring
+	ppreduce
+	jumpifteanoberry BattleScript_ButItFailed
+@ at least one battler is affected 
+	attackanimation
+	waitanimation
+BattleScript_TeatimeLoop:
+	jumpifteainvulnerable BS_TARGET, BattleScript_Teatimevul
+	jumpifrodaffected BS_TARGET, BattleScript_Teatimerod
+	jumpifabsorbaffected BS_TARGET, BattleScript_Teatimesorb
+	jumpifmotoraffected BS_TARGET, BattleScript_Teatimemotor
+	orword gHitMarker, HITMARKER_NO_ANIMATIONS | HITMARKER_IGNORE_SUBSTITUTE | HITMARKER_IGNORE_DISGUISE
+	setbyte sBERRY_OVERRIDE, TRUE   @ override the requirements for eating berries
+	consumeberry BS_TARGET, TRUE  @ consume the berry, then restore the item from changedItems
+	bicword gHitMarker, HITMARKER_NO_ANIMATIONS | HITMARKER_IGNORE_SUBSTITUTE | HITMARKER_IGNORE_DISGUISE
+	setbyte sBERRY_OVERRIDE, FALSE
+	removeitem BS_TARGET
+	moveendto MOVEEND_NEXT_TARGET
+	jumpifnexttargetvalid BattleScript_TeatimeLoop
+	moveendcase MOVEEND_CLEAR_BITS
+	goto BattleScript_MoveEnd
+BattleScript_Teatimevul:
+	moveendto MOVEEND_NEXT_TARGET
+	jumpifnexttargetvalid BattleScript_TeatimeLoop
+	moveendcase MOVEEND_CLEAR_BITS
+	goto BattleScript_MoveEnd
+BattleScript_Teatimesorb:
+	copybyte gBattlerAbility, gBattlerTarget
+	call BattleScript_AbilityPopUp
+	moveendto MOVEEND_NEXT_TARGET
+	jumpifnexttargetvalid BattleScript_TeatimeLoop
+	moveendcase MOVEEND_CLEAR_BITS
+	goto BattleScript_MoveEnd
+BattleScript_Teatimerod:
+	copybyte gBattlerAbility, gBattlerTarget
+	call BattleScript_AbilityPopUp
+	playstatchangeanimation BS_TARGET, BIT_SPATK, STAT_CHANGE_BY_TWO
+	setstatchanger STAT_SPATK, 1, FALSE
+	statbuffchange STAT_CHANGE_ALLOW_PTR, BattleScript_TeatimeBuffer
+	jumpifbyte CMP_EQUAL, cMULTISTRING_CHOOSER, 0x2, BattleScript_TeatimeBuffer
+	printfromtable gStatUpStringIds
+	waitmessage 0x40
+	moveendto MOVEEND_NEXT_TARGET
+	jumpifnexttargetvalid BattleScript_TeatimeLoop
+	moveendcase MOVEEND_CLEAR_BITS
+	goto BattleScript_MoveEnd
+BattleScript_Teatimemotor:
+	copybyte gBattlerAbility, gBattlerTarget
+	call BattleScript_AbilityPopUp
+	playstatchangeanimation BS_TARGET, BIT_SPEED, STAT_CHANGE_BY_TWO
+	setstatchanger STAT_SPEED, 1, FALSE
+	statbuffchange STAT_CHANGE_ALLOW_PTR, BattleScript_TeatimeBuffer
+	jumpifbyte CMP_EQUAL, cMULTISTRING_CHOOSER, 0x2, BattleScript_TeatimeBuffer
+	printfromtable gStatUpStringIds
+	waitmessage 0x40
+	moveendto MOVEEND_NEXT_TARGET
+	jumpifnexttargetvalid BattleScript_TeatimeLoop
+	moveendcase MOVEEND_CLEAR_BITS
+	goto BattleScript_MoveEnd
+BattleScript_TeatimeBuffer:
+	moveendto MOVEEND_NEXT_TARGET
+	jumpifnexttargetvalid BattleScript_TeatimeLoop
+	moveendcase MOVEEND_CLEAR_BITS
+	goto BattleScript_MoveEnd
 
 BattleScript_AffectionBasedEndurance::
 	playanimation BS_TARGET, B_ANIM_AFFECTION_HANGED_ON
@@ -5220,10 +5288,18 @@ BattleScript_EffectTeleportNew:
 BattleScript_EffectTeleportNewEnd:
 	goto BattleScript_MoveEnd
 
-.if B_BEAT_UP < GEN_5
 BattleScript_EffectBeatUp::
 	attackcanceler
 	accuracycheck BattleScript_PrintMoveMissed, ACC_CURR_MOVE
+.if B_BEAT_UP >= GEN_5
+	attackstring
+	ppreduce
+	critcalc
+	damagecalc
+	adjustdamage
+	trydobeatup
+	goto BattleScript_HitFromAtkAnimation
+.else
 	attackstring
 	pause B_WAIT_TIME_SHORT
 	ppreduce
@@ -5253,12 +5329,6 @@ BattleScript_BeatUpAttack::
 	goto BattleScript_BeatUpLoop
 BattleScript_BeatUpEnd::
 	end
-.else
-BattleScript_EffectBeatUp::
-	attackcanceler
-	accuracycheck BattleScript_PrintMoveMissed, ACC_CURR_MOVE
-	addbyte gBattleCommunication, 1
-	goto BattleScript_HitFromAtkString
 .endif
 
 BattleScript_EffectSemiInvulnerable::
@@ -8415,12 +8485,13 @@ BattleScript_IntimidateLoop:
 .endif
 	jumpifability BS_TARGET, ABILITY_GUARD_DOG, BattleScript_IntimidateInReverse
 BattleScript_IntimidateEffect:
-	copybyte sBATTLER, gBattlerTarget
-	statbuffchange STAT_CHANGE_NOT_PROTECT_AFFECTED | MOVE_EFFECT_CERTAIN, NULL
+	copybyte sBATTLER, gBattlerAttacker
+	statbuffchange STAT_CHANGE_NOT_PROTECT_AFFECTED | STAT_CHANGE_ALLOW_PTR, BattleScript_IntimidateLoopIncrement
 	setgraphicalstatchangevalues
 	playanimation BS_TARGET, B_ANIM_STATS_CHANGE, sB_ANIM_ARG1
 	printstring STRINGID_PKMNCUTSATTACKWITH
 	waitmessage B_WAIT_TIME_LONG
+	copybyte sBATTLER, gBattlerTarget
 	call BattleScript_TryAdrenalineOrb
 BattleScript_IntimidateLoopIncrement:
 	addbyte gBattlerTarget, 1
diff --git a/graphics/battle_anims/sprites/new/teapot.pal b/graphics/battle_anims/sprites/new/teapot.pal
new file mode 100644
index 000000000..f8319ce12
--- /dev/null
+++ b/graphics/battle_anims/sprites/new/teapot.pal
@@ -0,0 +1,19 @@
+JASC-PAL
+0100
+16
+10 247 12
+144 141 173
+255 255 255
+207 232 255
+106 104 120
+190 211 255
+166 169 214
+214 171 113
+162 119 89
+72 71 81
+251 255 211
+232 207 121
+255 255 153
+124 86 73
+0 0 0
+0 0 0
diff --git a/graphics/battle_anims/sprites/new/teapot.png b/graphics/battle_anims/sprites/new/teapot.png
new file mode 100644
index 000000000..6be0680df
Binary files /dev/null and b/graphics/battle_anims/sprites/new/teapot.png differ
diff --git a/include/battle.h b/include/battle.h
index 228ba769d..aafc3d2f6 100644
--- a/include/battle.h
+++ b/include/battle.h
@@ -612,7 +612,7 @@ struct BattleStruct
     u8 debugBattler;
     u8 magnitudeBasePower;
     u8 presentBasePower;
-    u8 roostTypes[MAX_BATTLERS_COUNT][3];
+    u8 roostTypes[MAX_BATTLERS_COUNT][2];
     u8 savedBattlerTarget;
     bool8 ateBoost[MAX_BATTLERS_COUNT];
     u8 activeAbilityPopUps; // as bits for each battler
@@ -651,6 +651,7 @@ struct BattleStruct
     u8 skyDropTargets[MAX_BATTLERS_COUNT]; // For Sky Drop, to account for if multiple Pokemon use Sky Drop in a double battle.
     // When using a move which hits multiple opponents which is then bounced by a target, we need to make sure, the move hits both opponents, the one with bounce, and the one without.
     u8 attackerBeforeBounce:2;
+    u8 beatUpSlot:3;
     u8 targetsDone[MAX_BATTLERS_COUNT]; // Each battler as a bit.
     u16 overwrittenAbilities[MAX_BATTLERS_COUNT];    // abilities overwritten during battle (keep separate from battle history in case of switching)
 };
diff --git a/include/battle_util.h b/include/battle_util.h
index 18af25c68..1a05c246c 100644
--- a/include/battle_util.h
+++ b/include/battle_util.h
@@ -144,6 +144,7 @@ u16 CalcTypeEffectivenessMultiplier(u16 move, u8 moveType, u8 battlerAtk, u8 bat
 u16 CalcPartyMonTypeEffectivenessMultiplier(u16 move, u16 speciesDef, u16 abilityDef);
 u16 GetTypeModifier(u8 atkType, u8 defType);
 s32 GetStealthHazardDamage(u8 hazardType, u8 battlerId);
+s32 GetStealthHazardDamageByTypesAndHP(u8 hazardType, u8 type1, u8 type2, u32 maxHp);
 u16 GetMegaEvolutionSpecies(u16 preEvoSpecies, u16 heldItemId);
 u16 GetPrimalReversionSpecies(u16 preEvoSpecies, u16 heldItemId);
 u16 GetWishMegaEvolutionSpecies(u16 preEvoSpecies, u16 moveId1, u16 moveId2, u16 moveId3, u16 moveId4);
diff --git a/include/config/battle.h b/include/config/battle.h
index 3f06f54da..c060cb0cc 100644
--- a/include/config/battle.h
+++ b/include/config/battle.h
@@ -38,6 +38,7 @@
 #define B_STEEL_RESISTANCES         GEN_LATEST // In Gen6+, Steel-type Pokémon are no longer resistant to Dark-type and Ghost-type moves.
 #define B_PRANKSTER_DARK_TYPES      GEN_LATEST // In Gen7+, Prankster-elevated status moves do not affect Dark type Pokémon.
 #define B_SHEER_COLD_IMMUNITY       GEN_LATEST // In Gen7+, Ice-types are immune to Sheer Cold
+#define B_ROOST_PURE_FLYING         GEN_LATEST // In Gen5+, Roost makes pure Flying-types into Normal-type.
 
 // Turn settings
 #define B_BINDING_TURNS             GEN_LATEST // In Gen5+, binding moves last for 4-5 turns instead of 2-5 turns. (With Grip Claw, 7 and 5 turns respectively.)
diff --git a/include/constants/battle_anim.h b/include/constants/battle_anim.h
index 52b20ecaa..0e8aaea83 100644
--- a/include/constants/battle_anim.h
+++ b/include/constants/battle_anim.h
@@ -394,6 +394,8 @@
 #define ANIM_TAG_OMEGA_SYMBOL               (ANIM_SPRITES_START + 382)
 #define ANIM_TAG_STEEL_BEAM                 (ANIM_SPRITES_START + 383)
 #define ANIM_TAG_POLTERGEIST                (ANIM_SPRITES_START + 384)
+#define ANIM_TAG_TEAPOT                     (ANIM_SPRITES_START + 385)
+
 
 // battlers
 #define ANIM_ATTACKER    0
diff --git a/include/constants/battle_move_effects.h b/include/constants/battle_move_effects.h
index 122660c05..89613f277 100644
--- a/include/constants/battle_move_effects.h
+++ b/include/constants/battle_move_effects.h
@@ -397,7 +397,9 @@
 #define EFFECT_DOUBLE_SHOCK                 391
 #define EFFECT_SPECIAL_ATTACK_UP_HIT        392
 #define EFFECT_VICTORY_DANCE                393
+#define EFFECT_TEATIME                      394
+
+#define NUM_BATTLE_MOVE_EFFECTS             395
 
-#define NUM_BATTLE_MOVE_EFFECTS             394
 
 #endif  // GUARD_CONSTANTS_BATTLE_MOVE_EFFECTS_H
diff --git a/include/constants/battle_script_commands.h b/include/constants/battle_script_commands.h
index 61f69587c..8f9ce0af8 100644
--- a/include/constants/battle_script_commands.h
+++ b/include/constants/battle_script_commands.h
@@ -247,9 +247,14 @@
 #define VARIOUS_GET_BATTLER_SIDE                    156
 #define VARIOUS_CHECK_PARENTAL_BOND_COUNTER         157
 #define VARIOUS_SWAP_STATS                          158
-#define VARIOUS_TRY_WIND_RIDER_POWER                159
-#define VARIOUS_ACTIVATE_WEATHER_CHANGE_ABILITIES   160
-#define VARIOUS_ACTIVATE_TERRAIN_CHANGE_ABILITIES   161
+#define VARIOUS_JUMP_IF_ROD                         159
+#define VARIOUS_JUMP_IF_ABSORB                      160
+#define VARIOUS_JUMP_IF_MOTOR                       161
+#define VARIOUS_TEATIME_INVUL                       162
+#define VARIOUS_TEATIME_TARGETS                     163
+#define VARIOUS_TRY_WIND_RIDER_POWER                164
+#define VARIOUS_ACTIVATE_WEATHER_CHANGE_ABILITIES   165
+#define VARIOUS_ACTIVATE_TERRAIN_CHANGE_ABILITIES   166
 
 // Cmd_manipulatedamage
 #define DMG_CHANGE_SIGN            0
diff --git a/include/graphics.h b/include/graphics.h
index 512038b5f..78074a9d3 100644
--- a/include/graphics.h
+++ b/include/graphics.h
@@ -9957,6 +9957,8 @@ extern const u32 gBattleAnimSpriteGfx_Tornado[];
 extern const u32 gBattleAnimSpritePal_Tornado[];
 extern const u32 gBattleAnimSpriteGfx_ZMoveSymbol[];
 extern const u32 gBattleAnimSpritePal_ZMoveSymbol[];
+extern const u32 gBattleAnimSpriteGfx_Teapot[];
+extern const u32 gBattleAnimSpritePal_Teapot[];
 
 extern const u32 gBattleAnimBgImage_Dark[];
 extern const u32 gBattleAnimBgImage_Ghost[];
diff --git a/src/battle_ai_main.c b/src/battle_ai_main.c
index 384c50d88..92866a7c2 100644
--- a/src/battle_ai_main.c
+++ b/src/battle_ai_main.c
@@ -2702,7 +2702,7 @@ static s16 AI_DoubleBattle(u8 battlerAtk, u8 battlerDef, u16 move, s16 score)
         switch (gBattleMoves[AI_DATA->partnerMove].effect)
         {
         case EFFECT_HELPING_HAND:
-            if (IS_MOVE_STATUS(move))
+            if (!IS_MOVE_STATUS(move))
                 score += 5;
             break;
         case EFFECT_PERISH_SONG:
diff --git a/src/battle_ai_util.c b/src/battle_ai_util.c
index 128f223a1..ef97ab9a1 100644
--- a/src/battle_ai_util.c
+++ b/src/battle_ai_util.c
@@ -2429,19 +2429,41 @@ static bool32 PartyBattlerShouldAvoidHazards(u8 currBattler, u8 switchBattler)
 {
     struct Pokemon *mon = GetPartyBattlerPartyData(currBattler, switchBattler);
     u16 ability = GetMonAbility(mon);   // we know our own party data
-    u16 holdEffect = GetBattlerHoldEffect(GetMonData(mon, MON_DATA_HELD_ITEM), TRUE);
+    u16 holdEffect;
+    u16 species = GetMonData(mon, MON_DATA_SPECIES);
     u32 flags = gSideStatuses[GetBattlerSide(currBattler)] & (SIDE_STATUS_SPIKES | SIDE_STATUS_STEALTH_ROCK | SIDE_STATUS_STICKY_WEB | SIDE_STATUS_TOXIC_SPIKES);
+    s32 hazardDamage = 0;
+    u8 type1 = gSpeciesInfo[species].type1;
+    u8 type2 = gSpeciesInfo[species].type2;
+    u32 maxHp = GetMonData(mon, MON_DATA_MAX_HP);
 
     if (flags == 0)
         return FALSE;
 
-    if (ability == ABILITY_MAGIC_GUARD || ability == ABILITY_LEVITATE
-      || holdEffect == HOLD_EFFECT_HEAVY_DUTY_BOOTS)
+    if (ability == ABILITY_MAGIC_GUARD)
+        return FALSE;
+    if (gFieldStatuses & STATUS_FIELD_MAGIC_ROOM || ability == ABILITY_KLUTZ)
+        holdEffect = HOLD_EFFECT_NONE;
+    else
+        holdEffect = gItems[GetMonData(mon, MON_DATA_HELD_ITEM)].holdEffect;
+    if (holdEffect == HOLD_EFFECT_HEAVY_DUTY_BOOTS)
         return FALSE;
 
-    if (flags & (SIDE_STATUS_SPIKES | SIDE_STATUS_STEALTH_ROCK) && GetMonData(mon, MON_DATA_HP) < (GetMonData(mon, MON_DATA_MAX_HP) / 8))
-        return TRUE;
+    if (flags & SIDE_STATUS_STEALTH_ROCK)
+        hazardDamage += GetStealthHazardDamageByTypesAndHP(gBattleMoves[MOVE_STEALTH_ROCK].type, type1, type2, maxHp);
 
+    if (flags & SIDE_STATUS_SPIKES && ((type1 != TYPE_FLYING && type2 != TYPE_FLYING
+        && ability != ABILITY_LEVITATE && holdEffect != HOLD_EFFECT_AIR_BALLOON)
+        || holdEffect == HOLD_EFFECT_IRON_BALL || gFieldStatuses & STATUS_FIELD_GRAVITY))
+    {
+        u8 spikesDmg = maxHp / ((5 - gSideTimers[GetBattlerSide(currBattler)].spikesAmount) * 2);
+        if (spikesDmg == 0)
+            spikesDmg = 1;
+        hazardDamage += spikesDmg;
+    }
+
+    if (hazardDamage >= GetMonData(mon, MON_DATA_HP))
+        return TRUE;
     return FALSE;
 }
 
diff --git a/src/battle_anim_effects_1.c b/src/battle_anim_effects_1.c
index 0db7f69d5..ea36b2eac 100644
--- a/src/battle_anim_effects_1.c
+++ b/src/battle_anim_effects_1.c
@@ -2447,6 +2447,39 @@ const struct SpriteTemplate gFollowMeFingerSpriteTemplate =
     .callback = AnimFollowMeFinger,
 };
 
+const union AffineAnimCmd gTeaAffineAnimCmds1[] =
+{
+        AFFINEANIMCMD_FRAME(0x10, 0x10, 0, 0),
+        AFFINEANIMCMD_FRAME(0x1E, 0x1E, 0, 8),
+        AFFINEANIMCMD_END,
+};
+
+const union AffineAnimCmd gTeaAffineAnimCmds2[] =
+{
+        AFFINEANIMCMD_FRAME(0x0, 0x0, -3, 11),
+        AFFINEANIMCMD_FRAME(0x0, 0x0, 3, 11),
+        AFFINEANIMCMD_LOOP(2),
+        AFFINEANIMCMD_FRAME(0xFFE2, 0xFFE2, 0, 8),
+        AFFINEANIMCMD_END,
+};
+
+const union AffineAnimCmd *const gTeaAffineAnimTable[] =
+{
+        gTeaAffineAnimCmds1,
+        gTeaAffineAnimCmds2,
+};
+
+const struct SpriteTemplate gTeapotSpriteTemplate =
+{
+        .tileTag = ANIM_TAG_TEAPOT,
+        .paletteTag = ANIM_TAG_TEAPOT,
+        .oam = &gOamData_AffineDouble_ObjNormal_64x64,
+        .anims = gDummySpriteAnimTable,
+        .images = NULL,
+        .affineAnims = gTeaAffineAnimTable,
+        .callback = AnimMetronomeFinger,
+};
+
 const union AnimCmd gTauntFingerAnimCmds1[] =
 {
     ANIMCMD_FRAME(0, 1),
diff --git a/src/battle_main.c b/src/battle_main.c
index 27ed4a6c3..56b009cbb 100644
--- a/src/battle_main.c
+++ b/src/battle_main.c
@@ -101,7 +101,7 @@ static void SetActionsAndBattlersTurnOrder(void);
 static void UpdateBattlerPartyOrdersOnSwitch(void);
 static bool8 AllAtActionConfirmed(void);
 static void TryChangeTurnOrder(void);
-static void CheckFocusPunch_ClearVarsBeforeTurnStarts(void);
+static void CheckChosenMoveForEffectsBeforeTurnStarts(void);
 static void CheckMegaEvolutionBeforeTurn(void);
 static void CheckQuickClaw_CustapBerryActivation(void);
 static void FreeResetData_ReturnToOvOrDoEvolutions(void);
@@ -3039,6 +3039,7 @@ static void BattleStartClearSetData(void)
 
     gBattleStruct->stickyWebUser = 0xFF;
     gBattleStruct->appearedInBattle = 0;
+    gBattleStruct->beatUpSlot = 0;
 
     for (i = 0; i < PARTY_SIZE; i++)
     {
@@ -4887,7 +4888,7 @@ static void CheckMegaEvolutionBeforeTurn(void)
     }
 
     #if B_MEGA_EVO_TURN_ORDER <= GEN_6
-        gBattleMainFunc = CheckFocusPunch_ClearVarsBeforeTurnStarts;
+        gBattleMainFunc = CheckChosenMoveForEffectsBeforeTurnStarts;
         gBattleStruct->focusPunchBattlerId = 0;
     #else
         gBattleMainFunc = TryChangeTurnOrder; // This will just do nothing if no mon has mega evolved
@@ -4912,11 +4913,11 @@ static void TryChangeTurnOrder(void)
             }
         }
     }
-    gBattleMainFunc = CheckFocusPunch_ClearVarsBeforeTurnStarts;
+    gBattleMainFunc = CheckChosenMoveForEffectsBeforeTurnStarts;
     gBattleStruct->focusPunchBattlerId = 0;
 }
 
-static void CheckFocusPunch_ClearVarsBeforeTurnStarts(void)
+static void CheckChosenMoveForEffectsBeforeTurnStarts(void)
 {
     u32 i;
 
@@ -4930,7 +4931,7 @@ static void CheckFocusPunch_ClearVarsBeforeTurnStarts(void)
                 && !(gDisableStructs[gBattlerAttacker].truantCounter)
                 && !(gProtectStructs[gActiveBattler].noValidMoves))
             {
-                switch(gChosenMoveByBattler[gActiveBattler])
+                switch (gChosenMoveByBattler[gActiveBattler])
                 {
                 case MOVE_FOCUS_PUNCH:
                     BattleScriptExecute(BattleScript_FocusPunchSetUp);
diff --git a/src/battle_script_commands.c b/src/battle_script_commands.c
index a979400ab..ec4d72a08 100644
--- a/src/battle_script_commands.c
+++ b/src/battle_script_commands.c
@@ -4802,22 +4802,24 @@ static void Cmd_setroost(void)
     {
         gBattleStruct->roostTypes[gBattlerAttacker][0] = TYPE_FLYING;
         gBattleStruct->roostTypes[gBattlerAttacker][1] = TYPE_FLYING;
-        gBattleStruct->roostTypes[gBattlerAttacker][2] = TYPE_FLYING;
+#if B_ROOST_PURE_FLYING >= GEN_5
         SET_BATTLER_TYPE(gBattlerAttacker, TYPE_NORMAL);
+#else
+        SET_BATTLER_TYPE(gBattlerAttacker, TYPE_MYSTERY);
+#endif
     }
-    // Dual Type with Flying Type.
-    else if ((gBattleMons[gBattlerAttacker].type1 == TYPE_FLYING && gBattleMons[gBattlerAttacker].type2 != TYPE_FLYING)
-           ||(gBattleMons[gBattlerAttacker].type2 == TYPE_FLYING && gBattleMons[gBattlerAttacker].type1 != TYPE_FLYING))
+    // Dual type with flying type.
+    else if (gBattleMons[gBattlerAttacker].type1 == TYPE_FLYING || gBattleMons[gBattlerAttacker].type2 == TYPE_FLYING)
     {
         gBattleStruct->roostTypes[gBattlerAttacker][0] = gBattleMons[gBattlerAttacker].type1;
         gBattleStruct->roostTypes[gBattlerAttacker][1] = gBattleMons[gBattlerAttacker].type2;
         if (gBattleMons[gBattlerAttacker].type1 == TYPE_FLYING)
             gBattleMons[gBattlerAttacker].type1 = TYPE_MYSTERY;
-        if (gBattleMons[gBattlerAttacker].type2 == TYPE_FLYING)
+        else if (gBattleMons[gBattlerAttacker].type2 == TYPE_FLYING)
             gBattleMons[gBattlerAttacker].type2 = TYPE_MYSTERY;
     }
     // Non-flying type.
-    else if (!IS_BATTLER_OF_TYPE(gBattlerAttacker, TYPE_FLYING))
+    else
     {
         gBattleStruct->roostTypes[gBattlerAttacker][0] = gBattleMons[gBattlerAttacker].type1;
         gBattleStruct->roostTypes[gBattlerAttacker][1] = gBattleMons[gBattlerAttacker].type2;
@@ -7921,35 +7923,34 @@ static bool32 HasAttackerFaintedTarget(void)
 static void HandleTerrainMove(u16 move)
 {
     u32 statusFlag = 0;
-    u8 *timer = NULL;
 
     switch (gBattleMoves[move].effect)
     {
     case EFFECT_MISTY_TERRAIN:
-        statusFlag = STATUS_FIELD_MISTY_TERRAIN, timer = &gFieldTimers.terrainTimer;
+        statusFlag = STATUS_FIELD_MISTY_TERRAIN;
         gBattleCommunication[MULTISTRING_CHOOSER] = 0;
         break;
     case EFFECT_GRASSY_TERRAIN:
-        statusFlag = STATUS_FIELD_GRASSY_TERRAIN, timer = &gFieldTimers.terrainTimer;
+        statusFlag = STATUS_FIELD_GRASSY_TERRAIN;
         gBattleCommunication[MULTISTRING_CHOOSER] = 1;
         break;
     case EFFECT_ELECTRIC_TERRAIN:
-        statusFlag = STATUS_FIELD_ELECTRIC_TERRAIN, timer = &gFieldTimers.terrainTimer;
+        statusFlag = STATUS_FIELD_ELECTRIC_TERRAIN;
         gBattleCommunication[MULTISTRING_CHOOSER] = 2;
         break;
     case EFFECT_PSYCHIC_TERRAIN:
-        statusFlag = STATUS_FIELD_PSYCHIC_TERRAIN, timer = &gFieldTimers.terrainTimer;
+        statusFlag = STATUS_FIELD_PSYCHIC_TERRAIN;
         gBattleCommunication[MULTISTRING_CHOOSER] = 3;
         break;
     case EFFECT_HIT_SET_REMOVE_TERRAIN:
         switch (gBattleMoves[move].argument)
         {
         case 0: //genesis supernova
-            statusFlag = STATUS_FIELD_PSYCHIC_TERRAIN, timer = &gFieldTimers.terrainTimer;
+            statusFlag = STATUS_FIELD_PSYCHIC_TERRAIN;
             gBattleCommunication[MULTISTRING_CHOOSER] = 3;
             break;
         case 1: //splintered stormshards
-            if (!(gFieldStatuses & (STATUS_FIELD_MISTY_TERRAIN | STATUS_FIELD_GRASSY_TERRAIN | STATUS_FIELD_ELECTRIC_TERRAIN | STATUS_FIELD_PSYCHIC_TERRAIN)))
+            if (!(gFieldStatuses & STATUS_FIELD_TERRAIN_ANY))
             {
                 //no terrain to remove -> jump to battle script pointer
                 gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 3);
@@ -7957,7 +7958,7 @@ static void HandleTerrainMove(u16 move)
             else
             {
                 // remove all terrain
-                gFieldStatuses &= ~(STATUS_FIELD_MISTY_TERRAIN | STATUS_FIELD_GRASSY_TERRAIN | STATUS_FIELD_ELECTRIC_TERRAIN | STATUS_FIELD_PSYCHIC_TERRAIN);
+                gFieldStatuses &= ~STATUS_FIELD_TERRAIN_ANY;
                 gBattleCommunication[MULTISTRING_CHOOSER] = 4;
                 gBattlescriptCurrInstr += 7;
             }
@@ -7977,9 +7978,9 @@ static void HandleTerrainMove(u16 move)
         gFieldStatuses &= ~STATUS_FIELD_TERRAIN_ANY;
         gFieldStatuses |= statusFlag;
         if (GetBattlerHoldEffect(gBattlerAttacker, TRUE) == HOLD_EFFECT_TERRAIN_EXTENDER)
-            *timer = 8;
+            gFieldTimers.terrainTimer = 8;
         else
-            *timer = 5;
+            gFieldTimers.terrainTimer = 5;
         gBattlescriptCurrInstr += 7;
     }
 }
@@ -8130,6 +8131,67 @@ static bool32 IsRototillerAffected(u32 battlerId)
     return TRUE;
 }
 
+
+static bool32 IsAbilityRodAffected(void)
+{
+    u32 moveType;
+
+    if (gBattleStruct->dynamicMoveType == 0)
+        moveType = gBattleMoves[gCurrentMove].type;
+    else if (!(gBattleStruct->dynamicMoveType & 0x40))
+        moveType = gBattleStruct->dynamicMoveType & 0x3F;
+    else
+        moveType = gBattleMoves[gCurrentMove].type;
+
+    if (moveType == TYPE_ELECTRIC && GetBattlerAbility(gBattlerTarget) == ABILITY_LIGHTNING_ROD)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+static bool32 IsAbilityMotorAffected(void)
+{
+    u32 moveType;
+
+    if (gBattleStruct->dynamicMoveType == 0)
+        moveType = gBattleMoves[gCurrentMove].type;
+    else if (!(gBattleStruct->dynamicMoveType & 0x40))
+        moveType = gBattleStruct->dynamicMoveType & 0x3F;
+    else
+        moveType = gBattleMoves[gCurrentMove].type;
+
+    if (moveType == TYPE_ELECTRIC && GetBattlerAbility(gBattlerTarget) == ABILITY_MOTOR_DRIVE)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+static bool32 IsAbilityAbsorbAffected(void)
+{
+    u32 moveType;
+
+    if (gBattleStruct->dynamicMoveType == 0)
+        moveType = gBattleMoves[gCurrentMove].type;
+    else if (!(gBattleStruct->dynamicMoveType & 0x40))
+        moveType = gBattleStruct->dynamicMoveType & 0x3F;
+    else
+        moveType = gBattleMoves[gCurrentMove].type;
+
+    if (moveType == TYPE_ELECTRIC && GetBattlerAbility(gBattlerTarget) == ABILITY_VOLT_ABSORB)
+        return TRUE;
+    else
+        return FALSE;
+}
+
+static bool32 IsTeatimeAffected(u32 battlerId)
+{
+    if (ItemId_GetPocket(gBattleMons[battlerId].item) != POCKET_BERRIES)
+        return FALSE;   // Only berries
+    if (gStatuses3[battlerId] & STATUS3_SEMI_INVULNERABLE)
+        return FALSE;   // Teatime doesn't affected semi-invulnerable battlers
+    return TRUE;
+}
+
 #define COURTCHANGE_SWAP(status, structField, temp)                     \
 {                                                                       \
     temp = gSideStatuses[B_SIDE_PLAYER];                                \
@@ -10032,7 +10094,7 @@ static void Cmd_various(void)
         gBattleMons[gActiveBattler].item = gLastUsedItem;
         break;
     case VARIOUS_SET_BEAK_BLAST:
-        gProtectStructs[gBattlerAttacker].beakBlastCharge = TRUE;
+        gProtectStructs[gActiveBattler].beakBlastCharge = TRUE;
         break;
     case VARIOUS_SWAP_SIDE_STATUSES:
         CourtChangeSwapSideStatuses();
@@ -10099,6 +10161,45 @@ static void Cmd_various(void)
             PREPARE_STAT_BUFFER(gBattleTextBuff1, statId);
         }
         break;
+    case VARIOUS_TEATIME_TARGETS:
+    {
+        u32 count = 0;
+
+        for (i = 0; i < gBattlersCount; i++)
+        {
+            if (IsTeatimeAffected(i))
+                count++;
+        }
+        if (count == 0)
+            gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 3);   // Teatime fails
+        else
+            gBattlescriptCurrInstr += 7;
+    }
+    return;
+     case VARIOUS_TEATIME_INVUL:
+        if (ItemId_GetPocket(gBattleMons[gActiveBattler].item) == POCKET_BERRIES && !(gStatuses3[gBattlerTarget] & (STATUS3_SEMI_INVULNERABLE)))
+            gBattlescriptCurrInstr += 7;
+        else
+            gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 3);
+        return;
+     case VARIOUS_JUMP_IF_ROD:
+        if (IsAbilityRodAffected())
+            gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 3);
+        else
+            gBattlescriptCurrInstr += 7;
+        return;
+     case VARIOUS_JUMP_IF_MOTOR:
+        if (IsAbilityMotorAffected())
+            gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 3);
+        else
+            gBattlescriptCurrInstr += 7;
+        return;
+     case VARIOUS_JUMP_IF_ABSORB:
+        if (IsAbilityAbsorbAffected())
+            gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 3);
+        else
+            gBattlescriptCurrInstr += 7;
+        return;
     case VARIOUS_TRY_WIND_RIDER_POWER:
         {
             u16 ability = GetBattlerAbility(gActiveBattler);
@@ -10802,7 +10903,7 @@ static u32 ChangeStatBuffs(s8 statValue, u32 statId, u32 flags, const u8 *BS_ptr
         else if ((activeBattlerAbility == ABILITY_CLEAR_BODY
                   || activeBattlerAbility == ABILITY_FULL_METAL_BODY
                   || activeBattlerAbility == ABILITY_WHITE_SMOKE)
-                 && !certain && gCurrentMove != MOVE_CURSE)
+                 && !affectsUser && !certain && gCurrentMove != MOVE_CURSE)
         {
             if (flags == STAT_CHANGE_ALLOW_PTR)
             {
@@ -11952,8 +12053,9 @@ static void Cmd_trysetencore(void)
     }
 
     if (gLastMoves[gBattlerTarget] == MOVE_STRUGGLE
-        || gLastMoves[gBattlerTarget] == MOVE_ENCORE
-        || gLastMoves[gBattlerTarget] == MOVE_MIRROR_MOVE)
+     || gLastMoves[gBattlerTarget] == MOVE_ENCORE
+     || gLastMoves[gBattlerTarget] == MOVE_MIRROR_MOVE
+     || gLastMoves[gBattlerTarget] == MOVE_SHELL_TRAP)
     {
         i = MAX_MON_MOVES;
     }
@@ -12881,6 +12983,10 @@ static void Cmd_trysetfutureattack(void)
 
 static void Cmd_trydobeatup(void)
 {
+#if B_BEAT_UP >= GEN_5
+    gBattleStruct->beatUpSlot++;
+    gBattlescriptCurrInstr += 9;
+#else
     struct Pokemon *party;
 
     if (GetBattlerSide(gBattlerAttacker) == B_SIDE_PLAYER)
@@ -12924,6 +13030,7 @@ static void Cmd_trydobeatup(void)
         else
             gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 5);
     }
+#endif
 }
 
 static void Cmd_setsemiinvulnerablebit(void)
diff --git a/src/battle_util.c b/src/battle_util.c
index 4eb44daa7..5a9b15518 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -60,6 +60,7 @@ static bool32 IsUnnerveAbilityOnOpposingSide(u8 battlerId);
 static u8 GetFlingPowerFromItemId(u16 itemId);
 static void SetRandomMultiHitCounter();
 static u32 GetBattlerItemHoldEffectParam(u8 battlerId, u16 item);
+static u16 GetInverseTypeMultiplier(u16 multiplier);
 
 extern const u8 *const gBattleScriptsForMoveEffects[];
 extern const u8 *const gBattlescriptsForRunningByItem[];
@@ -229,8 +230,9 @@ static u8 CalcBeatUpPower(void)
         party = gPlayerParty;
     else
         party = gEnemyParty;
-    // Party slot is set in the battle script for Beat Up
-    species = GetMonData(&party[gBattleCommunication[0] - 1], MON_DATA_SPECIES);
+
+    // Party slot is incremented by the battle script for Beat Up after this damage calculation
+    species = GetMonData(&party[gBattleStruct->beatUpSlot], MON_DATA_SPECIES);
     basePower = (gSpeciesInfo[species].baseAttack / 10) + 5;
 
     return basePower;
@@ -418,7 +420,7 @@ void HandleAction_UseMove(void)
             battlerAbility = GetBattlerAbility(gActiveBattler);
 
             RecordAbilityBattle(gActiveBattler, gBattleMons[gActiveBattler].ability);
-            if (battlerAbility == ABILITY_LIGHTNING_ROD)
+            if (battlerAbility == ABILITY_LIGHTNING_ROD && gCurrentMove != MOVE_TEATIME)
                 gSpecialStatuses[gActiveBattler].lightningRodRedirected = TRUE;
             else if (battlerAbility == ABILITY_STORM_DRAIN)
                 gSpecialStatuses[gActiveBattler].stormDrainRedirected = TRUE;
@@ -1261,38 +1263,6 @@ static const u16 sTypeEffectivenessTable[NUMBER_OF_MON_TYPES][NUMBER_OF_MON_TYPE
     {X(1.0), X(2.0), X(1.0), X(0.5), X(1.0), X(1.0), X(1.0), X(1.0), X(0.5), X(1.0), X(0.5), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(2.0), X(2.0), X(1.0)}, // fairy
 };
 
-static const u16 sInverseTypeEffectivenessTable[NUMBER_OF_MON_TYPES][NUMBER_OF_MON_TYPES] =
-{
-//   normal  fight   flying  poison  ground  rock    bug     ghost   steel   mystery fire    water   grass  electric psychic ice     dragon  dark    fairy
-    {X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(2.0), X(1.0), X(2.0), X(2.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0)}, // normal
-    {X(0.5), X(1.0), X(2.0), X(2.0), X(1.0), X(0.5), X(2.0), X(2.0), X(0.5), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(2.0), X(0.5), X(1.0), X(0.5), X(2.0)}, // fight
-    {X(1.0), X(0.5), X(1.0), X(1.0), X(1.0), X(2.0), X(0.5), X(1.0), X(2.0), X(1.0), X(1.0), X(1.0), X(0.5), X(2.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0)}, // flying
-    {X(1.0), X(1.0), X(1.0), X(2.0), X(2.0), X(2.0), X(1.0), X(2.0), X(2.0), X(1.0), X(1.0), X(1.0), X(0.5), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(0.5)}, // poison
-    {X(1.0), X(1.0), X(2.0), X(0.5), X(1.0), X(0.5), X(2.0), X(1.0), X(0.5), X(1.0), X(0.5), X(1.0), X(2.0), X(0.5), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0)}, // ground
-    {X(1.0), X(2.0), X(0.5), X(1.0), X(2.0), X(1.0), X(0.5), X(1.0), X(2.0), X(1.0), X(0.5), X(1.0), X(1.0), X(1.0), X(1.0), X(0.5), X(1.0), X(1.0), X(1.0)}, // rock
-    {X(1.0), X(2.0), X(2.0), X(2.0), X(1.0), X(1.0), X(1.0), X(2.0), X(2.0), X(1.0), X(2.0), X(1.0), X(0.5), X(1.0), X(0.5), X(1.0), X(1.0), X(0.5), X(2.0)}, // bug
-    #if B_STEEL_RESISTANCES >= GEN_6
-    {X(2.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(0.5), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(0.5), X(1.0), X(1.0), X(2.0), X(1.0)}, // ghost
-    #else
-    {X(2.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(0.5), X(2.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(0.5), X(1.0), X(1.0), X(2.0), X(1.0)}, // ghost
-    #endif
-    {X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(0.5), X(1.0), X(1.0), X(2.0), X(1.0), X(2.0), X(2.0), X(1.0), X(2.0), X(1.0), X(0.5), X(1.0), X(1.0), X(0.5)}, // steel
-    {X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0)}, // mystery
-    {X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(2.0), X(0.5), X(1.0), X(0.5), X(1.0), X(2.0), X(2.0), X(0.5), X(1.0), X(1.0), X(0.5), X(2.0), X(1.0), X(1.0)}, // fire
-    {X(1.0), X(1.0), X(1.0), X(1.0), X(0.5), X(0.5), X(1.0), X(1.0), X(1.0), X(1.0), X(0.5), X(2.0), X(2.0), X(1.0), X(1.0), X(1.0), X(2.0), X(1.0), X(1.0)}, // water
-    {X(1.0), X(1.0), X(2.0), X(2.0), X(0.5), X(0.5), X(2.0), X(1.0), X(2.0), X(1.0), X(2.0), X(0.5), X(2.0), X(1.0), X(1.0), X(1.0), X(2.0), X(1.0), X(1.0)}, // grass
-    {X(1.0), X(1.0), X(0.5), X(1.0), X(2.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(0.5), X(2.0), X(2.0), X(1.0), X(1.0), X(2.0), X(1.0), X(1.0)}, // electric
-    {X(1.0), X(0.5), X(1.0), X(0.5), X(1.0), X(1.0), X(1.0), X(1.0), X(2.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(2.0), X(1.0), X(1.0), X(2.0), X(1.0)}, // psychic
-    {X(1.0), X(1.0), X(0.5), X(1.0), X(0.5), X(1.0), X(1.0), X(1.0), X(2.0), X(1.0), X(2.0), X(2.0), X(0.5), X(1.0), X(1.0), X(2.0), X(0.5), X(1.0), X(1.0)}, // ice
-    {X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(2.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(0.5), X(1.0), X(2.0)}, // dragon
-    #if B_STEEL_RESISTANCES >= GEN_6
-    {X(1.0), X(2.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(0.5), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(0.5), X(1.0), X(1.0), X(2.0), X(2.0)}, // dark
-    #else
-    {X(1.0), X(2.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(0.5), X(2.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(0.5), X(1.0), X(1.0), X(2.0), X(2.0)}, // dark
-    #endif
-    {X(1.0), X(0.5), X(1.0), X(2.0), X(1.0), X(1.0), X(1.0), X(1.0), X(2.0), X(1.0), X(2.0), X(1.0), X(1.0), X(1.0), X(1.0), X(1.0), X(0.5), X(0.5), X(1.0)}, // fairy
-};
-
 #undef X
 
 // code
@@ -3917,7 +3887,7 @@ u8 AtkCanceller_UnableToUseMove(void)
                         gMultiHitCounter++;
                 }
 
-                gBattleCommunication[0] = 0; // For later
+                gBattleStruct->beatUpSlot = 0;
                 PREPARE_BYTE_NUMBER_BUFFER(gBattleScripting.multihitString, 1, 0)
             }
             #endif
@@ -8255,6 +8225,11 @@ bool32 IsBattlerProtected(u8 battlerId, u16 move)
         else if (gProtectStructs[battlerId].protected)
             return FALSE;
     }
+    
+        if (move == MOVE_TEATIME)
+    {
+            return FALSE;
+    }
 
     // Protective Pads doesn't stop Unseen Fist from bypassing Protect effects, so IsMoveMakingContact() isn't used here.
     // This means extra logic is needed to handle Shell Side Arm.
@@ -9932,20 +9907,32 @@ u16 CalcPartyMonTypeEffectivenessMultiplier(u16 move, u16 speciesDef, u16 abilit
     return modifier;
 }
 
+static u16 GetInverseTypeMultiplier(u16 multiplier)
+{
+    switch (multiplier)
+    {
+    case UQ_4_12(0.0):
+    case UQ_4_12(0.5):
+        return UQ_4_12(2.0);
+    case UQ_4_12(2.0):
+        return UQ_4_12(0.5);
+    case UQ_4_12(1.0):
+    default:
+        return UQ_4_12(1.0);
+    }
+}
+
 u16 GetTypeModifier(u8 atkType, u8 defType)
 {
 #if B_FLAG_INVERSE_BATTLE != 0
     if (FlagGet(B_FLAG_INVERSE_BATTLE))
-        return sInverseTypeEffectivenessTable[atkType][defType];
+        return GetInverseTypeMultiplier(sTypeEffectivenessTable[atkType][defType]);
 #endif
     return sTypeEffectivenessTable[atkType][defType];
 }
 
-s32 GetStealthHazardDamage(u8 hazardType, u8 battlerId)
+s32 GetStealthHazardDamageByTypesAndHP(u8 hazardType, u8 type1, u8 type2, u32 maxHp)
 {
-    u8 type1 = gBattleMons[battlerId].type1;
-    u8 type2 = gBattleMons[battlerId].type2;
-    u32 maxHp = gBattleMons[battlerId].maxHP;
     s32 dmg = 0;
     u16 modifier = UQ_4_12(1.0);
 
@@ -9988,6 +9975,15 @@ s32 GetStealthHazardDamage(u8 hazardType, u8 battlerId)
     return dmg;
 }
 
+s32 GetStealthHazardDamage(u8 hazardType, u8 battlerId)
+{
+    u8 type1 = gBattleMons[battlerId].type1;
+    u8 type2 = gBattleMons[battlerId].type2;
+    u32 maxHp = gBattleMons[battlerId].maxHP;
+
+    return GetStealthHazardDamageByTypesAndHP(hazardType, type1, type2, maxHp);
+}
+
 bool32 IsPartnerMonFromSameTrainer(u8 battlerId)
 {
     if (GetBattlerSide(battlerId) == B_SIDE_OPPONENT && gBattleTypeFlags & BATTLE_TYPE_TWO_OPPONENTS)
diff --git a/src/data/battle_anim.h b/src/data/battle_anim.h
index e6e03f06c..5be53fe66 100644
--- a/src/data/battle_anim.h
+++ b/src/data/battle_anim.h
@@ -1450,6 +1450,7 @@ const struct CompressedSpriteSheet gBattleAnimPicTable[] =
     {gBattleAnimSpriteGfx_OmegaSymbol, 0x0200, ANIM_TAG_OMEGA_SYMBOL},
     {gBattleAnimSpriteGfx_Orbs, 0x0180, ANIM_TAG_STEEL_BEAM},
     {gBattleAnimSpriteGfx_AuraSphere, 0x200, ANIM_TAG_POLTERGEIST},
+    {gBattleAnimSpriteGfx_Teapot, 0x1800, ANIM_TAG_TEAPOT},
 };
 
 const struct CompressedSpritePalette gBattleAnimPaletteTable[] =
@@ -1900,6 +1901,7 @@ const struct CompressedSpritePalette gBattleAnimPaletteTable[] =
     {gBattleAnimSpritePal_OmegaSymbol, ANIM_TAG_OMEGA_SYMBOL},
     {gBattleAnimSpritePal_SteelBeam, ANIM_TAG_STEEL_BEAM},
     {gBattleAnimSpritePal_Poltergeist, ANIM_TAG_POLTERGEIST},
+    {gBattleAnimSpritePal_Teapot, ANIM_TAG_TEAPOT},
 };
 
 const struct BattleAnimBackground gBattleAnimBackgroundTable[] =
diff --git a/src/data/battle_moves.h b/src/data/battle_moves.h
index e5d3306ce..f5cc351f2 100644
--- a/src/data/battle_moves.h
+++ b/src/data/battle_moves.h
@@ -12351,13 +12351,13 @@ const struct BattleMove gBattleMoves[MOVES_COUNT_Z] =
 
     [MOVE_TEATIME] =
     {
-        .effect = EFFECT_PLACEHOLDER,   //TODO
+        .effect = EFFECT_TEATIME,
         .power = 0,
         .type = TYPE_NORMAL,
         .accuracy = 0,
         .pp = 10,
         .secondaryEffectChance = 0,
-        .target = MOVE_TARGET_ALL_BATTLERS,
+        .target = MOVE_TARGET_USER,
         .priority = 0,
         .flags = 0,
         .split = SPLIT_STATUS,
diff --git a/src/graphics.c b/src/graphics.c
index 0126150fd..b8ba41666 100644
--- a/src/graphics.c
+++ b/src/graphics.c
@@ -286,6 +286,8 @@ const u32 gBattleAnimSpritePal_Tornado[] = INCBIN_U32("graphics/battle_anims/spr
 const u32 gBattleAnimSpriteGfx_ZMoveSymbol[] = INCBIN_U32("graphics/battle_anims/sprites/z_move_symbol.4bpp.lz");
 const u32 gBattleAnimSpritePal_ZMoveSymbol[] = INCBIN_U32("graphics/battle_anims/sprites/z_move_symbol.gbapal.lz");
 
+const u32 gBattleAnimSpriteGfx_Teapot[] = INCBIN_U32("graphics/battle_anims/sprites/new/teapot.4bpp.lz");
+const u32 gBattleAnimSpritePal_Teapot[] = INCBIN_U32("graphics/battle_anims/sprites/new/teapot.gbapal.lz");
 
 // Battle anims
 const u32 gBattleAnimSpriteGfx_Bubble[] = INCBIN_U32("graphics/battle_anims/sprites/bubble.4bpp.lz");