diff --git a/src/battle_script_commands.c b/src/battle_script_commands.c
index 48ac38841..e01e13dd0 100644
--- a/src/battle_script_commands.c
+++ b/src/battle_script_commands.c
@@ -2073,6 +2073,15 @@ u8 GetBattlerTurnOrderNum(u8 battlerId)
     return i;
 }
 
+static void CheckSetUnburden(u8 battlerId)
+{
+    if (GetBattlerAbility(battlerId) == ABILITY_UNBURDEN)
+    {
+        gBattleResources->flags->flags[battlerId] |= RESOURCE_FLAG_UNBURDEN;
+        RecordAbilityBattle(battlerId, ABILITY_UNBURDEN);
+    }
+}
+
 #define INCREMENT_RESET_RETURN                  \
 {                                               \
     gBattlescriptCurrInstr++;                   \
@@ -2677,7 +2686,12 @@ void SetMoveEffect(bool32 primary, u32 certain)
                     else
                     {
                         gLastUsedItem = gBattleStruct->changedItems[gBattlerAttacker] = gBattleMons[gBattlerTarget].item;
-                        gBattleMons[gBattlerTarget].item = 0;
+                        gBattleMons[gBattlerTarget].item = 0;                        
+
+                        CheckSetUnburden(gBattlerTarget);
+
+                        if (GetBattlerAbility(gBattlerAttacker) == ABILITY_UNBURDEN && gBattleResources->flags->flags[gBattlerAttacker] & RESOURCE_FLAG_UNBURDEN)
+                            gBattleResources->flags->flags[gBattlerAttacker] &= ~(RESOURCE_FLAG_UNBURDEN);
 
                         gActiveBattler = gBattlerAttacker;
                         BtlController_EmitSetMonData(0, REQUEST_HELDITEM_BATTLE, 0, 2, &gLastUsedItem);
@@ -2795,6 +2809,7 @@ void SetMoveEffect(bool32 primary, u32 certain)
                     gLastUsedItem = gBattleMons[gEffectBattler].item;
                     gBattleMons[gEffectBattler].item = 0;
                     gWishFutureKnock.knockedOffMons[side] |= gBitTable[gBattlerPartyIndexes[gEffectBattler]];
+                    CheckSetUnburden(gEffectBattler);
 
                     BattleScriptPush(gBattlescriptCurrInstr + 1);
                     gBattlescriptCurrInstr = BattleScript_KnockedOff;
@@ -2929,6 +2944,9 @@ void SetMoveEffect(bool32 primary, u32 certain)
                 {
                     gLastUsedItem = gBattleMons[gEffectBattler].item;
                     gBattleMons[gEffectBattler].item = 0;
+
+                    CheckSetUnburden(gEffectBattler);
+
                     gActiveBattler = gEffectBattler;
                     BtlController_EmitSetMonData(0, REQUEST_HELDITEM_BATTLE, 0, 2, &gBattleMons[gEffectBattler].item);
                     MarkBattlerForControllerExec(gActiveBattler);
@@ -2942,6 +2960,9 @@ void SetMoveEffect(bool32 primary, u32 certain)
                 {
                     gLastUsedItem = gBattleMons[gEffectBattler].item;
                     gBattleMons[gEffectBattler].item = 0;
+
+                    CheckSetUnburden(gEffectBattler);
+
                     gActiveBattler = gEffectBattler;
                     BtlController_EmitSetMonData(0, REQUEST_HELDITEM_BATTLE, 0, 2, &gBattleMons[gEffectBattler].item);
                     MarkBattlerForControllerExec(gActiveBattler);
@@ -6119,6 +6140,8 @@ static void Cmd_removeitem(void)
         gBattleStruct->usedHeldItems[gActiveBattler] = gBattleMons[gActiveBattler].item;
 
     gBattleMons[gActiveBattler].item = 0;
+    
+    CheckSetUnburden(gActiveBattler);
 
     BtlController_EmitSetMonData(0, REQUEST_HELDITEM_BATTLE, 0, 2, &gBattleMons[gActiveBattler].item);
     MarkBattlerForControllerExec(gActiveBattler);
@@ -10486,9 +10509,18 @@ static void Cmd_tryswapitems(void) // trick
             if (oldItemAtk != 0 && *newItemAtk != 0)
                 gBattleCommunication[MULTISTRING_CHOOSER] = 2; // attacker's item -> <- target's item
             else if (oldItemAtk == 0 && *newItemAtk != 0)
-                gBattleCommunication[MULTISTRING_CHOOSER] = 0; // nothing -> <- target's item
+                {
+                    if (GetBattlerAbility(gBattlerAttacker) == ABILITY_UNBURDEN && gBattleResources->flags->flags[gBattlerAttacker] & RESOURCE_FLAG_UNBURDEN)
+                        gBattleResources->flags->flags[gBattlerAttacker] &= ~(RESOURCE_FLAG_UNBURDEN);
+
+                    gBattleCommunication[MULTISTRING_CHOOSER] = 0; // nothing -> <- target's item
+                }
             else
+            {
+                CheckSetUnburden(gBattlerAttacker);
+
                 gBattleCommunication[MULTISTRING_CHOOSER] = 1; // attacker's item -> <- nothing
+            }
         }
     }
 }
diff --git a/src/battle_util.c b/src/battle_util.c
index ebdc2063b..e0d88bafc 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -5132,7 +5132,7 @@ static u16 CalcMoveBasePower(u16 move, u8 battlerAtk, u8 battlerDef)
         // todo
         break;
     case EFFECT_FLING:
-        // todo
+        // todo: program Fling + Unburden interaction
         break;
     case EFFECT_ERUPTION:
         basePower = gBattleMons[battlerAtk].hp * basePower / gBattleMons[battlerAtk].maxHP;