X-23

Double Strike, Indestructible, Rampage 1, Riot,
Undying, Unleash, Partner "Wolverine (Any)"
When X-23 comes into play, X-23 fights target
creature an opponent controls. Anytime a
creature damaged by X-23 dies, give X-23 a
+1/+1 counter for each creature that died.
X-23 Deals damage to creatures in -1/-1 counters instead of combat damage. Creatures damaged by
X-23 cannot be regenerated this turn.