A Single Strike of a Hundred Swords

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You can only use this card if <Crusch Karsten> is on your field. Choose one character with 5000 or less BP on your opponent's front line and sideline it. Until the end of the turn, when you check the BP of a character card in your hand with one of your abilities, you may treat it as having +1000 BP.

[Special] Choose one character on your opponent's front line and sideline it.