The Cauldron of Eternity (Extended Art) (ELD-352) - Throne of Eldraine: (Extended Art)

This spell costs {2} less to cast for each creature card in your graveyard.
Whenever a creature you control dies, put it on the bottom of its owner's library.
{2}, , Pay 2 life: Return target creature card from your graveyard to the battlefield. Activate only as a sorcery.