Depths of the Tomb

Unsettle (When this card leaves your graveyard, create a 2/2 black Zombie creature token.)
Target creature gets -1/-1 until end of turn for each Zombie you control. Then, you may shuffle any number of cards named Depths of the Tomb from your graveyard into your library.
"When you are lost in a lich's tomb, death is the kindest fate you may