Number 104: Masquerade

[ Spellcaster / Xyz / Effect ] 3 Level 4 monsters During the Battle Phase, when your opponent activates a monster effect (Quick Effect): You can detach 1 material from this card; negate the activation, and if you do, inflict 800 damage to your opponent. Once per turn, during your Main Phase: You can send the top card of your opponent's Deck to the GY. ATK/ 2700 DEF/ 1200