Mr.5 (Gem) (Alternate Art) (OP04-072) - Kingdoms of Intrigue Foil

[On Your Opponent's Attack] [Once Per Turn] DON!! -2 (You may return the specified number of DON!! cards from your field to your DON!! deck.) You may rest this Character: K.O. up to 1 of your opponent's Characters with a cost of 4 or less.