Io, dream-gorged whale

Flying, hexproof
Whenever Io, dream-gorged whale is dealt damage, exile that many cards from target players library. You may play them for as long as they remained exiled.
Whenever you cast a creature from exile, choose a kind of counter at random from among flying, lifelink, vigilence, and first strike. Put a counter of that kind on it.
It floats in a cosmos of infinite possibility, where your eyes don’t betray you. — Celdin Philosopher