diff --git a/data/battle_scripts_1.s b/data/battle_scripts_1.s
index 39a5ddca79..d41231dcd8 100644
--- a/data/battle_scripts_1.s
+++ b/data/battle_scripts_1.s
@@ -370,6 +370,17 @@ gBattleScriptsForMoveEffects:: @ 82D86A8
 	.4byte BattleScript_EffectAttackerDefenseDownHit
 	.4byte BattleScript_EffectBodyPress
 	.4byte BattleScript_EffectEvasionUpHit
+	.4byte BattleScript_EffectDoubleIronBash
+
+BattleScript_EffectDoubleIronBash:
+	attackcanceler
+	accuracycheck BattleScript_PrintMoveMissed, ACC_CURR_MOVE
+	attackstring
+	ppreduce
+	setmultihitcounter 2
+	initmultihitstring
+	sethword sMULTIHIT_EFFECT, MOVE_EFFECT_FLINCH
+	goto BattleScript_MultiHitLoop
 
 BattleScript_EffectEvasionUpHit:
 	setmoveeffect MOVE_EFFECT_EVS_PLUS_1 | MOVE_EFFECT_AFFECTS_USER
diff --git a/include/constants/battle_move_effects.h b/include/constants/battle_move_effects.h
index 3e831cfd3b..d056edf6a9 100644
--- a/include/constants/battle_move_effects.h
+++ b/include/constants/battle_move_effects.h
@@ -354,7 +354,8 @@
 #define EFFECT_ATTACKER_DEFENSE_DOWN_HIT 348
 #define EFFECT_BODY_PRESS 349
 #define EFFECT_EVASION_UP_HIT 350
+#define EFFECT_DOUBLE_IRON_BASH 351
 
-#define NUM_BATTLE_MOVE_EFFECTS 351
+#define NUM_BATTLE_MOVE_EFFECTS 352
 
 #endif  // GUARD_CONSTANTS_BATTLE_MOVE_EFFECTS_H
diff --git a/src/data/battle_moves.h b/src/data/battle_moves.h
index 41aad29f60..4a917dc9be 100644
--- a/src/data/battle_moves.h
+++ b/src/data/battle_moves.h
@@ -10456,7 +10456,7 @@ const struct BattleMove gBattleMoves[MOVES_COUNT] =
     {
         #if B_UPDATED_MOVE_DATA >= GEN_8
             .power = 80,
-            .effect = EFFECT_EVASION_UP_HIT, // TODO: EFFECT_EVASION_UP_HIT
+            .effect = EFFECT_EVASION_UP_HIT,
             .pp = 10,
             .flags = FLAG_MAKES_CONTACT | FLAG_PROTECT_AFFECTED | FLAG_MIRROR_MOVE_AFFECTED | FLAG_KINGS_ROCK_AFFECTED | FLAG_SHEER_FORCE_BOOST,
         #else
@@ -10716,7 +10716,7 @@ const struct BattleMove gBattleMoves[MOVES_COUNT] =
         #else
             .flags = FLAG_MAKES_CONTACT | FLAG_PROTECT_AFFECTED | FLAG_MIRROR_MOVE_AFFECTED | FLAG_DMG_MINIMIZE | FLAG_IRON_FIST_BOOST | FLAG_SHEER_FORCE_BOOST,
         #endif
-        .effect = EFFECT_PLACEHOLDER,   //TODO (EFFECT_FLINCH_HIT + EFFECT_DOUBLE_HIT)
+        .effect = EFFECT_DOUBLE_IRON_BASH,
         .power = 60,
         .type = TYPE_STEEL,
         .accuracy = 100,