YuGiOh Return of the Duelist Common Gagagarush REDU-EN067

Normal. When a face-up Gagaga monster(s) you control is targeted by the effect of your opponent's monster: Negate the effect of that opponent's monster, and if destroy it, then inflict damage to your opponent equal to the destroyed monster's ATK or DEF in the Graveyard (whichever is higher).