Ark, Titan of Salvo and Mist

When Ark enters the battlefield, sacrifice
it unless it escaped.
Whenever Ark enters the battlefield or attacks,
you may cast target instant or sorcery card three
mana or less from your graveyard without
paying its mana cost then exile it and deals 2
damage divided as you choose among one or
two targets.
Escape -{r}{r}{u}{u}, Exile five other
cards from your graveyard.