Urulu, Titan of Frozen Peaks

When Urulu enters the battlefield, sacrifice it unless it escaped.
Whenever Urulu, Titan of Frozen Peaks enters the battlefield or attacks, tap two target permanents. Those permanents don't untap during their controller's next untap step.
Escape-{w}{w}{u}{u},Exile 5 other cards from your graveyard. (You may cast this card from your graveyard for it's escape cost.)