Wolf Savant

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owners control with a +1/+1 counter on it.)
If Wolf Savant is exiled from anywhere, put three 1/1 wolf tokens onto the battlefield.
If Wolf savant is put into a graveyard from anywhere, put a 2/2 wolf token onto the battlefield.