Nyhaloth "The Real"

When Nyhaloth "The Real" enters the battlefield, sacrifice it unless it escaped.
Whenever Nyhaloth "The Real" enters the battlefield or attacks you may cast spells from
your graveyard this turn by paying life equal to
its mana value rather than paying its mana cost.
Escape-{b}{b}{r}{r}, Exile four other cards from
your graveyard. (You may cast this card from your graveyard for its escape cost.)