Purgatory Knights, Scrap-Drill Dragon (X-BT02A-CP03/0043EN) (X-BT02A)

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!