Registeel

Absorb 1, last strike
Registeel can't have -1/-1 counters placed on it. {c}{c}: Registeel gets +1/+1 until end of turn. {c}{c}: Registeel assigns combat damage equal to its
toughness rather than its power until end of turn. {2}, {t}, Exert Registeel: Registeel deals damage
equal to its total power and toughness to target
permanent.
Metalcraft — Artifacts you control have "{t}: Add {c}{c}, or you get {e}" as long as you control three
or more artifacts.