Corvin The Vile Purger

Afflict 2 (Whenever a creature with this ability
becomes blocked, defending player loses life equal
to the Afflict value.)
Creatures that block Corvin The Vile Purger get
a -1/-1 counter put on them.
Vengeful, (When a creature with "Vengeful"
dies from combat damage destroy all creatures
that did damage to it that turn.)
{2}{t}: Destroy target non-land, non-creature, non-legendary permanent or remove a -1/-1
counter from a target creature.