When an opponent's Xyz Monster declares an attack: Activate this card by targeting the attacking monster. It cannot attack, also its effects are negated. While that monster is on the field, during each of your opponent's End Phases: Send the top 3 cards of your opponent's Deck to the Graveyard. When that monster leaves the field, destroy this card.
![Vain Betrayer [JOTL-EN073] Common | North Game Den](http://gameden.com/cdn/shop/products/70871_200w.jpg?v=1610741255)
