diff --git a/data/battle_scripts_1.s b/data/battle_scripts_1.s
index 7591d81a09..60e1688ca9 100644
--- a/data/battle_scripts_1.s
+++ b/data/battle_scripts_1.s
@@ -5864,6 +5864,15 @@ BattleScript_IllusionOff::
 	waitmessage 0x40
 	return
 
+BattleScript_AftermathDmg::
+	orword gHitMarker, HITMARKER_IGNORE_SUBSTITUTE | HITMARKER_x100000
+	healthbarupdate BS_ATTACKER
+	datahpupdate BS_ATTACKER
+	printstring STRINGID_AFTERMATHDMG
+	waitmessage 0x40
+	tryfaintmon BS_ATTACKER, FALSE, NULL
+	return
+
 BattleScript_MoveUsedIsAsleep::
 	printstring STRINGID_PKMNFASTASLEEP
 	waitmessage 0x40
diff --git a/include/battle_scripts.h b/include/battle_scripts.h
index 721c49dab5..448f3b29f6 100644
--- a/include/battle_scripts.h
+++ b/include/battle_scripts.h
@@ -327,5 +327,6 @@ extern const u8 BattleScript_MoveEffectIncinerate[];
 extern const u8 BattleScript_MoveEffectBugBite[];
 extern const u8 BattleScript_IllusionOff[];
 extern const u8 BattleScript_DancerActivates[];
+extern const u8 BattleScript_AftermathDmg[];
 
 #endif // GUARD_BATTLE_SCRIPTS_H
diff --git a/src/battle_message.c b/src/battle_message.c
index 91fbf02ca0..74c7084490 100644
--- a/src/battle_message.c
+++ b/src/battle_message.c
@@ -592,7 +592,7 @@ static const u8 sText_TurboblazeEnters[] = _("{B_ATK_NAME_WITH_PREFIX} is radiat
 static const u8 sText_SlowStartEnters[] = _("{B_ATK_NAME_WITH_PREFIX} can't get it going!");
 static const u8 sText_SlowStartEnd[] = _("{B_ATK_NAME_WITH_PREFIX} finally got its act together!");
 static const u8 sText_SolarPowerHpDrop[] = _("The {B_ATK_NAME_WITH_PREFIX}'s {B_ATK_ABILITY}\ntakes its toll!");
-static const u8 sText_AftermathDmg[] = _("The {B_DEF_NAME_WITH_PREFIX}\nsuffers the {B_DEF_ABILITY}!");
+static const u8 sText_AftermathDmg[] = _("{B_ATK_NAME_WITH_PREFIX} is hurt!");
 static const u8 sText_AnticipationActivates[] = _("The {B_ATK_NAME_WITH_PREFIX} shuddered in {B_ATK_ABILITY}!");
 static const u8 sText_ForewarnActivates[] = _("{B_ATK_ABILITY} alerted the {B_ATK_NAME_WITH_PREFIX} to the\n{B_DEF_NAME_WITH_PREFIX}'s {B_BUFF1}!");
 static const u8 sText_IceBodyHpGain[] = _("{B_ATK_NAME_WITH_PREFIX}'s {B_ATK_ABILITY}\nhealed it a little bit!");
diff --git a/src/battle_util.c b/src/battle_util.c
index 32492410e6..ef7e85ecc1 100644
--- a/src/battle_util.c
+++ b/src/battle_util.c
@@ -3327,6 +3327,21 @@ u8 AbilityBattleEffects(u8 caseID, u8 battler, u8 ability, u8 special, u16 moveA
                 effect++;
             }
             break;
+        case ABILITY_AFTERMATH:
+            if (IsAbilityOnField(ABILITY_DAMP))
+                break;
+            else if (!(gMoveResultFlags & MOVE_RESULT_NO_EFFECT)
+             && gBattleMons[gBattlerTarget].hp == 0
+             && (gBattleMoves[move].flags & FLAG_MAKES_CONTACT))
+            {
+                gBattleMoveDamage = gBattleMons[gBattlerAttacker].maxHP / 4;
+                if (gBattleMoveDamage == 0)
+                    gBattleMoveDamage = 1;
+                BattleScriptPushCursor();
+                gBattlescriptCurrInstr = BattleScript_AftermathDmg;
+                effect++;
+            }
+            break;
         case ABILITY_EFFECT_SPORE:
             if (!IS_BATTLER_OF_TYPE(gBattlerAttacker, TYPE_GRASS)
              && GetBattlerAbility(gBattlerAttacker) != ABILITY_OVERCOAT