Erebos' Enamored

When Erebos' Favored dies, each other player
sacrifices a creature.
At the beginning of your end step if Erebos'
Favored is in play, you may pay {b}{b} to sacrifice
her. If she is in your graveyard with three or
more cards above it, you may discard a creature
card and put Erebos' Favored onto the battlefield.
"Erebos is male, and looses his mind a little when
he seize rare beauties; bringing much death. Then he
free them as sorrow mars them too greatly."