Lilith Umbra, Abyssal Embrace

Devour X (When this creature enters the battlefield, you may sacrifice any number of creatures. This creature enters the battlefield with a +1/+1 counter on it for each creature sacrificed this way.)

Watch Over the Dead (If you have more than 5 creatures in your graveyard, activate this ability. When you do, you may choose one creature from among them and return it to the battlefield. Now, if you have more than 10 creatures in your graveyard, you may return up to 3 creature cards from amo