Wolverine, Immortal Warrior

Haste, First Strike
Escape —{r/g}, Exile two other cards from your graveyard. This ability costs {x} more to activate
where X is equal to Wolverine, Immortal
Warrior's power. As Wolverine, Immortal
Warrior escapes, it perpetually gets +1/+1.
{2}: Put a double strike counter on Wolverine, Immortal Warrior. Sacrifice it at the beginning
of the next end step.