Phoebe, Titan of Night's Fears

When Phoebe, Titan of Night's Fears, enters the battlefield, sacrifice it unless it escaped.
Whenever Phoebe enters the battlefield or
attacks,each opponent exiles their graveyard and
you gain 1 life for each creature card exiled this
way.
Escape —{w}{w}{b}{b}, Exile five other cards from
your graveyard. (You may cast this card from your
graveyard for its escape cost.)