Wolverine

Unrivaled Lethality — Double all damage
Wolverine would deal.

At the beginning of each end step, if
Wolverine dealt damage to another creature
this turn, put a +1/+1 counter on him.

{1}{g}: Regenerate Wolverine. (The next time he
would be destroyed this turn, instead tap him,
remove him from combat, and heal all damage
on him.)