Arch-Vile

Arch-Vile costs {1} less for each creature card
in your graveyard.
{t}: Create a 4/2 flame wall creature token
with defender. Sacrifice it at end of turn.
{2}{r}{r},{t}: Return any number of creatures
with total toughness 5 or less from your
graveyard to the battlefield. Put a +1/+1 counter
on each of these creatures and they gain haste
until end of turn.