Lilith, Defiler of Light

Deathtouch, indestructible
Whenever Lilith, Defiler of Light attacks, you may pay {x}, where X is equal to the number of creatures in each graveyard. If you do, create X 2/2 black Zombie creature tokens.
{5}{b}{b}, Exile Lilith: Destroy all creatures, then return target creature from your graveyard to your hand.