Totem Bird (LED8-EN054) - Legendary Duelists: Synchro Storm 1st Edition

2 Level 3 WIND monsters
During either player's turn, when a Spell/Trap Card is activated: You can detach 2 Xyz Materials from this card; negate the activation, and if you do, destroy it. This card loses 300 ATK while it has no Xyz Materials.