Ame-no-Habakiri (MP01-106 N) [Masterpiece "Pilgrim-Memories"]

As you play this card, target a J/resonator. If that J/resonator is still a legal target, put this card into the field added to the chosen target, otherwise put it into its owner's graveyard. Added J/resonator gains [+400/+400]. Whenever added J/resonator deals damage to a J/resonator your opponent controls >>> This card deals that much damage to that J/resonator's controller.