Reverse Skull, "Guilty Wave"

■ You may only call this card if you have a 《Darkhero》 item equipped and you have no monsters on your field.

■ [Call Cost] [Pay 2 gauge]

■ When this card enters the field, if you have four or more different 《Darkhero》 in your drop zone, put up to one 《Darkhero》 that is not an impact monster from your drop zone into your hand.

■ At the end of the battle of this card, return this card to your hand.