Marraro, Waker of the Dead

Whenever a creature an opponent controls dies,
you may pay {b}. If you do, create a 1/1 Black
Zombie creature token.
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.)
"Necromancy is an amazing way of getting opponents
to come over to your side. Of course, they have to be
dead first, but that isn't a problem!"