Darigaaz, Shivan Champion

Flying
At the beginning of your end step, put a random
card from Darigaaz, Shivan Champion's
spellbook into exile face down with three
egg counters on it. It gains "At the beginning of
your upkeep, if this card is exiled, remove an
egg counter from it. Then if it has no
egg counters on it, put it onto the battlefield."