Gaz'rin, Swarm Lichlord

Deathtouch Hexproof Undergrowth
When Gaz'rin, Swarm Lichlord enters the battlefeild create X 1/1 Black Rat Tokens where
X is equal to the number of creatures in your graveyard.
{b}{g}{1},Sacrifice a Rat or {t}: return target
creature from your graveyard to your Hand
"Nothing is lost to us forever."
- Gaz'rin, Swarm Lichlord