Kakashi, Copycat Ninja

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

"As for my hobbies... I have lots of hobbies."
-Kakashi Hatake