The Grave-eater

When you cast The Grave-Eater, exile the top
card of your graveyard with a feast counter on it.
Whenever a card is put into any graveyard
from anywhere, you draw 2 cards and lose 2 life
if it matches a card type of any cards with
feast counters on them.
{1}, Sacrifice a permanent: You gain 1 life.
{1}, Discard a card: You gain 1 life.