Kreos, Hellfire Manipulator

Haste, Menace
Whenever you cast a spell, if that spell was cast
from exile, Kreos, Hellfire Manipulator deals 3
damage to each opponent.
At the beginning of your end step, if your
opponents lost 7 or more life this turn, exile
the top 2 cards of your library, you may cast
those cards for as long as they remained exiled.