When your opponent Special Summons a monster(s) from the Main Deck or GY: Banish it face-down.
How to Get
Anonymous 3days ago
I got 2 of this. So when The Vagabond appeared with Silent Magician deck, I destroyed his SM Lv4 and summoned Lv8 from the deck while I have this card face down, so what I was like "here she goes, be prepared!!" what happened next? NOTHING HAPPENED! The F! What was just happened what happened to this face down card?!
You defeated SM and she SS SM lv8 from deck. Well surely the "defeat" thing happened during damage step and during damage step, only counter trap and trap that modify Atk/Def value can be activated. This is neither one of those.