Rayami, First of the Fallen

If a nontoken creature would die, exile
that card with a blood counter on it instead.
As long as an exiled creature card with a
blood counter on it has flying, Rayami, First
of the Fallen has flying. The same is true for first strike, double strike, deathtouch, haste, hexproof, indestructible, lifelink, menace, protection, reach, trample, and vigilance.