whenever pyreheart wolf attacks, each creature you control can't be blocked this turn except by two or more creatures.
undying (when this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)
undying (when this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)