Morku, Titan of Assembled Iron

When Morku, Titan of Assembled Iron enters
the battlefield, sacrifice it unless it escaped.
Whenever Morku, Titan of Assembled Iron
enters the battlefield or attacks, it assembles two contraptions.
Escape {p/w}{p/u}{p/b}{p/r}{p/g}, Exile five other cards from
your graveyard. (You may cast this card from your
graveyard for its escape cost)