diff --git a/asm/macros/battle_script.inc b/asm/macros/battle_script.inc
index 9fa3fe0c3..9384a0f9d 100644
--- a/asm/macros/battle_script.inc
+++ b/asm/macros/battle_script.inc
@@ -1769,6 +1769,11 @@
 	various \battler, VARIOUS_TRY_ACTIVATE_GRIM_NEIGH
 	.endm
 
+	.macro trysetcorrosivegas battler:req, ptr:req
+	various \battler, VARIOUS_TRY_SET_CORROSIVE_GAS
+	.4byte \ptr
+	.endm
+
 @ helpful macros
 	.macro setstatchanger stat:req, stages:req, down:req
 	setbyte sSTATCHANGER \stat | \stages << 3 | \down << 7
diff --git a/data/battle_scripts_1.s b/data/battle_scripts_1.s
index 2e5ad0253..e1e7fbf9d 100644
--- a/data/battle_scripts_1.s
+++ b/data/battle_scripts_1.s
@@ -373,6 +373,25 @@ gBattleScriptsForMoveEffects:: @ 82D86A8
 	.4byte BattleScript_EffectScaleShot
 	.4byte BattleScript_EffectMeteorBeam
 	.4byte BattleScript_EffectRisingVoltage
+	.4byte BattleScript_EffectCorrosiveGas
+
+BattleScript_EffectCorrosiveGas::
+	attackcanceler
+	accuracycheck BattleScript_PrintMoveMissed, NO_ACC_CALC_CHECK_LOCK_ON
+	attackstring 
+	ppreduce
+	jumpifstatus2 BS_TARGET, STATUS2_SUBSTITUTE, BattleScript_PrintMoveMissed
+	trysetcorrosivegas BS_TARGET, BattleScript_ButItFailed
+	attackanimation
+	waitanimation
+	printstring STRINGID_ITEMMELTED
+	waitmessage 0x40
+	goto BattleScript_MoveEnd
+
+BattleScript_MeltedItem::
+	printstring STRINGID_ITEMMELTED
+	waitmessage 0x40
+	return
 
 BattleScript_EffectMeteorBeam::
 	@ DecideTurn
diff --git a/include/battle.h b/include/battle.h
index f009cbe7f..7212c4084 100644
--- a/include/battle.h
+++ b/include/battle.h
@@ -229,6 +229,7 @@ struct WishFutureKnock
     u8 wishMonId[MAX_BATTLERS_COUNT];
     u8 weatherDuration;
     u8 knockedOffMons[2]; // Each battler is represented by a bit. The array entry is dependent on the battler's side.
+    u8 meltedItemMons[2]; // Same as above 
 };
 
 struct AI_SavedBattleMon
diff --git a/include/battle_scripts.h b/include/battle_scripts.h
index f0712fc43..7ae55d01f 100644
--- a/include/battle_scripts.h
+++ b/include/battle_scripts.h
@@ -369,5 +369,6 @@ extern const u8 BattleScript_JabocaRowapBerryActivates[];
 extern const u8 BattleScript_NotAffectedAbilityPopUp[];
 extern const u8 BattleScript_BattlerShookOffTaunt[];
 extern const u8 BattleScript_BattlerGotOverItsInfatuation[];
+extern const u8 BattleScript_MeltedItem[];
 
 #endif // GUARD_BATTLE_SCRIPTS_H
diff --git a/include/constants/battle.h b/include/constants/battle.h
index b925904c2..d7bae55c3 100644
--- a/include/constants/battle.h
+++ b/include/constants/battle.h
@@ -347,6 +347,7 @@
 #define MOVE_EFFECT_INCINERATE          0x44
 #define MOVE_EFFECT_BUG_BITE            0x45
 #define MOVE_EFFECT_SPD_PLUS_1_DEF_MINUS_1 0x46
+#define MOVE_EFFECT_MELT_ITEM           0x4A
 #define NUM_MOVE_EFFECTS                0x47
 
 #define MOVE_EFFECT_AFFECTS_USER        0x4000
diff --git a/include/constants/battle_move_effects.h b/include/constants/battle_move_effects.h
index 03ea11136..d88b34a53 100644
--- a/include/constants/battle_move_effects.h
+++ b/include/constants/battle_move_effects.h
@@ -357,7 +357,8 @@
 #define EFFECT_SCALE_SHOT 351
 #define EFFECT_METEOR_BEAM 352
 #define EFFECT_RISING_VOLTAGE 353
+#define EFFECT_CORROSIVE_GAS 354
 
-#define NUM_BATTLE_MOVE_EFFECTS 354
+#define NUM_BATTLE_MOVE_EFFECTS 355
 
 #endif  // GUARD_CONSTANTS_BATTLE_MOVE_EFFECTS_H
diff --git a/include/constants/battle_script_commands.h b/include/constants/battle_script_commands.h
index faaf8f17e..f35dbe2e3 100644
--- a/include/constants/battle_script_commands.h
+++ b/include/constants/battle_script_commands.h
@@ -173,6 +173,7 @@
 #define VARIOUS_DESTROY_ABILITY_POPUP           102
 #define VARIOUS_TOTEM_BOOST                     103
 #define VARIOUS_TRY_ACTIVATE_GRIM_NEIGH         104
+#define VARIOUS_TRY_SET_CORROSIVE_GAS           105
 
 // Cmd_manipulatedamage
 #define DMG_CHANGE_SIGN            0
diff --git a/include/constants/battle_string_ids.h b/include/constants/battle_string_ids.h
index c1e35a312..72f178de7 100644
--- a/include/constants/battle_string_ids.h
+++ b/include/constants/battle_string_ids.h
@@ -572,8 +572,9 @@
 #define STRINGID_PKMNGOTOVERITSINFATUATION       568
 #define STRINGID_PKMNINSNAPTRAP                  569
 #define STRINGID_METEORBEAMCHARGING              570
+#define STRINGID_ITEMMELTED                      571
 
-#define BATTLESTRINGS_COUNT                      571
+#define BATTLESTRINGS_COUNT                      572
 
 // The below IDs are all indexes into battle message tables,
 // used to determine which of a set of messages to print.
diff --git a/src/battle_message.c b/src/battle_message.c
index fd33527a2..4d1ae2ddb 100644
--- a/src/battle_message.c
+++ b/src/battle_message.c
@@ -698,9 +698,11 @@ static const u8 sText_MicleBerryActivates[] = _("{B_SCR_ACTIVE_NAME_WITH_PREFIX}
 static const u8 sText_PkmnShookOffTheTaunt[] = _("{B_SCR_ACTIVE_NAME_WITH_PREFIX} shook off\nthe taunt!");
 static const u8 sText_PkmnGotOverItsInfatuation[] = _("{B_SCR_ACTIVE_NAME_WITH_PREFIX} got over\nits infatuation!");
 static const u8 sText_MeteorBeamCharging[] = _("{B_ATK_NAME_WITH_PREFIX} is overflowing\nwith space energy!");
+static const u8 sText_PkmnItemMelted[] = _("{B_ATK_NAME_WITH_PREFIX} corroded\n{B_DEF_NAME_WITH_PREFIX}'s {B_LAST_ITEM}!");
 
 const u8 *const gBattleStringsTable[BATTLESTRINGS_COUNT] =
 {
+    [STRINGID_ITEMMELTED - 12] = sText_PkmnItemMelted,
     [STRINGID_METEORBEAMCHARGING - 12] = sText_MeteorBeamCharging,
     [STRINGID_PKMNINSNAPTRAP - 12] = sText_PkmnInSnapTrap,
     [STRINGID_PKMNGOTOVERITSINFATUATION - 12] = sText_PkmnGotOverItsInfatuation,
diff --git a/src/battle_script_commands.c b/src/battle_script_commands.c
index 014c3c3c8..9915654c5 100644
--- a/src/battle_script_commands.c
+++ b/src/battle_script_commands.c
@@ -3021,7 +3021,8 @@ void SetMoveEffect(bool32 primary, u32 certain)
                            | BATTLE_TYPE_LINK
                            | BATTLE_TYPE_RECORDED_LINK
                            | BATTLE_TYPE_SECRET_BASE))
-                        && (gWishFutureKnock.knockedOffMons[side] & gBitTable[gBattlerPartyIndexes[gBattlerAttacker]]))
+                         && (gWishFutureKnock.knockedOffMons[side] & gBitTable[gBattlerPartyIndexes[gBattlerAttacker]]
+                         || gWishFutureKnock.meltedItemMons[side] & gBitTable[gBattlerPartyIndexes[gBattlerAttacker]]))
                     {
                         gBattlescriptCurrInstr++;
                     }
@@ -5267,6 +5268,11 @@ static void Cmd_switchindataupdate(void)
     {
         gBattleMons[gActiveBattler].item = 0;
     }
+    // check melted items
+    if (gWishFutureKnock.meltedItemMons[i] & gBitTable[gBattlerPartyIndexes[gActiveBattler]])
+    {
+        gBattleMons[gActiveBattler].item = 0;
+    }
 
     if (gBattleMoves[gCurrentMove].effect == EFFECT_BATON_PASS)
     {
@@ -8422,6 +8428,35 @@ static void Cmd_various(void)
             gBattlescriptCurrInstr += 7;    // exit if loop failed (failsafe)
         }
         return;
+    case VARIOUS_TRY_SET_CORROSIVE_GAS:
+        if (gBattleMons[gActiveBattler].item != 0
+            && CanBattlerGetOrLoseItem(gActiveBattler, gBattleMons[gActiveBattler].item)
+            && !NoAliveMonsForEitherParty())
+        {
+            if (GetBattlerAbility(gActiveBattler) == ABILITY_STICKY_HOLD && IsBattlerAlive(gActiveBattler))
+            {
+                gBattlerAbility = gActiveBattler;
+                BattleScriptPushCursor();
+                gBattlescriptCurrInstr = BattleScript_StickyHoldActivates;
+            }
+            else
+            {   //Item is melted normally
+                u32 side = GetBattlerSide(gActiveBattler);
+
+                gLastUsedItem = gBattleMons[gActiveBattler].item;
+                gBattleMons[gActiveBattler].item = 0;
+                gBattleStruct->choicedMove[gActiveBattler] = 0;
+                gWishFutureKnock.meltedItemMons[side] |= gBitTable[gBattlerPartyIndexes[gActiveBattler]];
+
+                CheckSetUnburden(gActiveBattler);
+                gBattlescriptCurrInstr += 7;
+            }
+        }
+        else
+        {
+            gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 3);
+        }
+        return;
     }
 
     gBattlescriptCurrInstr += 3;
@@ -11206,14 +11241,16 @@ static void Cmd_tryswapitems(void) // trick
         u8 sideAttacker = GetBattlerSide(gBattlerAttacker);
         u8 sideTarget = GetBattlerSide(gBattlerTarget);
 
-        // you can't swap items if they were knocked off in regular battles
+        // you can't swap items if they were knocked off or melted in regular battles
         if (!(gBattleTypeFlags & (BATTLE_TYPE_LINK
                              | BATTLE_TYPE_EREADER_TRAINER
                              | BATTLE_TYPE_FRONTIER
                              | BATTLE_TYPE_SECRET_BASE
                              | BATTLE_TYPE_RECORDED_LINK))
             && (gWishFutureKnock.knockedOffMons[sideAttacker] & gBitTable[gBattlerPartyIndexes[gBattlerAttacker]]
-                || gWishFutureKnock.knockedOffMons[sideTarget] & gBitTable[gBattlerPartyIndexes[gBattlerTarget]]))
+                || gWishFutureKnock.knockedOffMons[sideTarget] & gBitTable[gBattlerPartyIndexes[gBattlerTarget]]
+                || gWishFutureKnock.meltedItemMons[sideTarget] & gBitTable[gBattlerPartyIndexes[gBattlerAttacker]]
+                || gWishFutureKnock.meltedItemMons[sideTarget] & gBitTable[gBattlerPartyIndexes[gBattlerTarget]]))
         {
             gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 1);
         }
diff --git a/src/battle_util.c b/src/battle_util.c
index 4c46250dc..9d7453bab 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -7215,8 +7215,13 @@ static u16 CalcMoveBasePower(u16 move, u8 battlerAtk, u8 battlerDef)
             basePower = 120;
         break;
     case EFFECT_RISING_VOLTAGE:
+        #ifdef ITEM_EXPANSION   //Air Baloon exception with item expansion branch
         if (gFieldStatuses & STATUS_FIELD_ELECTRIC_TERRAIN && !IS_BATTLER_OF_TYPE(battlerDef, TYPE_FLYING)
             && gBattleMons[battlerDef].item != ITEM_AIR_BALLOON && gBattleMons[battlerDef].ability != ABILITY_LEVITATE)
+        #else
+        if (gFieldStatuses & STATUS_FIELD_ELECTRIC_TERRAIN && !IS_BATTLER_OF_TYPE(battlerDef, TYPE_FLYING)
+            && gBattleMons[battlerDef].ability != ABILITY_LEVITATE)
+        #endif
         basePower *= 2;
         break;
     }
diff --git a/src/data/battle_moves.h b/src/data/battle_moves.h
index 9e0c18298..20449e446 100644
--- a/src/data/battle_moves.h
+++ b/src/data/battle_moves.h
@@ -11402,7 +11402,7 @@ const struct BattleMove gBattleMoves[MOVES_COUNT] =
 
     [MOVE_CORROSIVE_GAS] =
     {
-        .effect = EFFECT_PLACEHOLDER,   //TODO
+        .effect = EFFECT_CORROSIVE_GAS,
         .power = 0,
         .type = TYPE_POISON,
         .accuracy = 100,