Gamma Knife (Pirate Foil) - OP05-077 - Premium Booster -The Best- Vol. 2 (PRB-02)

[Main] DON!! -1 (You may return the specified number of DON!! cards from your field to your DON!! deck.): Give up to 1 of your opponent's Characters -5000 power during this turn.
[Trigger] Add up to 1 DON!! card from your DON!! deck and set it as active.