Azrael, Angel of Death

Flying, indestructible
When Azrael enters the battlefield surveil 2.
{x}{u/b}{u/b},{t} : Until the beginning of your next
end step you may cast target instant with
converted mana cost X or less from your
graveyard without paying its mana cost, if you
do exile that card.
The Universe... is sick, Horseman. The Charred
Council refuses to admit it, but those of us who look...
we see... we had to do something.