Number 104: Masquerade (OP27-EN010) - (Super Rare) - OTS Tournament Pack 27 Unlimited

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.