When a face-up "Gagaga" monster(s) you control is targeted by the effects of an opponent's monster: Negate the effect of that opponent's monster; and if you do, destroy it; then inflict damage to your opponent equal to the destroyed monster's ATK or DEF in the Graveyard (whichever is higher).
![Gagagarush [REDU-EN067] Common](http://www.cardmerchanttakapuna.co.nz/cdn/shop/products/65825f81-b568-5c8d-943f-27e059849145.png?v=1698542278&width=1445)