Sariel, Anointed Purifier

Flying. Vigilance. Lifelink. Protection from
black and red.
If Sariel, Anointed Purifier would die or be
exiled, return it to the top of your library instead.
Whenever Sariel, Anointed Purifier is put on top
of your library, exile target black or red creature.
{t}: Sacrifice Sariel, Anointed Purifier.