Byrg of Deaths Release

Flying, Deathtouch, Hexproof, Indestructible
Whenever a card enters your graveyard, draw a card.
Byrg of deaths release gets +1/+1 for every creature card in your graveyard.
{t} Sacrifice a creature, Get {u}{b}{b}{g}, and put two +1/+1 counter on Byrg of deaths release.