Nicol Bolas, Escaped

Flying, Menace, Ward {1}

Whenever this creature attacks, each opponent sacrifices a non-token creature they control, then you may exile an instant or sorcery card from your graveyard with mana value equal to or less than the highest mana value creature sacrificed, and create a copy of the spell. You
may cast the copy without paying its mana cost

Escape — {5}{u}{b}{r}