Purgatory Knights, Scrap-Drill Dragon

■ If this card has 3 critical or more, it gets Penetrate. Then, if 4 or more, this card's attack cannot be nullified if it is attacking alone.

■ Counter [Act] During your turn, destroy a monster with "Purgatory Knights" in its card name on your field. If you do, for this turn, this card gets critical+1!