Xilos, Ashen Horror

When Xithos, Ashen Horror enters the
battlefield or attacks, you gain 3 life and
each opponent discards a card.
When Xithos, Ashen Horror enters the
battlefield, if you did not pay it's escape cost,
sacrifice it.
Escape {w}{w}{b}{b}- Exile 5 cards from
your graveyard. (You may play this card from
the graveyard for its escape cost.)