Ken'Kelag, Matriarch of Venom

Dark Tribute 3 (As this creature enters the battlefield, an opponent of your choice may sacrifice three creatures.)
When Ken'Kelag, Matriarch of Venom enters the battlefield, if dark tribute wasn't payed you may put up to three creatures from your graveyard/hand onto the battlefield under your control.
"The Queen of the under-dark, a place without lock or key, a place of death and rot." - Kellian