Special Hollow (EB05-049) - Extra Booster: One Piece Heroine's Edition Vol. 2

[Main] You may K.O. 1 of your {Thriller Bark Pirates} type Characters: Give up to 1 of your opponent's Characters -3 cost during this turn.
[Counter] You may K.O. 1 of your {Thriller Bark Pirates} type Characters: Up to 1 of your Leader or Characters gains +4000 power during this battle.