Worr, Titan of Life's Grit

When Worr enters the battlefield, sacrifice it
unless it escaped.
When Worr enters the battlefield or attacks,
target creature gets -3/-3 until end of turn and
return up to one target creature or land card from
your graveyard to your hand.
Escape — {b}{b}{g}{g}, Exile five other cards from
your graveyard. (You may cast this card from your graveyard for its escape cost.)