Tainted Adversary

Deathtouch

When Tainted Adversary enters, you may
pay {2}{b} any number of times. When you pay this cost one or more times, put that many +1/+1 counters on Tainted Adversary, then create twice that many 2/2 black Zombie creature tokens with decayed.
(A creature with decayed can't block. When it attacks, sacrifice it at end of combat.)