The Three Sisters Grey

Haunted —At the beginning of each upkeep, if
The Three Sisters Grey is in your graveyard,
each opponent sacrifices a creature.
Escape —{w}{w}{b}{b}, Exile three other cards from
your graveyard. (You may cast this card from your
graveyard for it's escape cost.)
When The Three Sisters Grey escapes, return
each creature sacrificed with it to the battlefield
under your control.