Truzog, Of The Plague

Infect, protection from black
Whenever a creature gains one or more
-1/-1 counters from Truzog, Of The Plague, put
that many +1/+1 counter on Truzog.
{b}{b}: remove 2 +1/+1 counters from Truzog
and create a 2/2 zombie token with infect.
{b}{b}: Return Truzog to the battlefield {t}