Calas Typhon, First Captain

Infect (This creature deals damage to creatures in the
form of -1/-1 counters and to players in the form of
poison counters.)
Destroyer Plague - {b}{b}: Destroy target creature
with a -1/-1 counter on it.
Gift of Nurgle - {1}{b/g}{b/g}: Regenerate each other
creature you control and put a +1/+1 counter
on them.