Anivia, the Cryophoenix

Flying, Persist (When this creature is put into a
graveyard from the battlefield, if it had no -1/-1
counters on it, return it to the battlefield under its
owner's control with a -1/-1 counter on it.)

At the beginning of your upkeep, remove
a -1/-1 counter from Anivia, the
Cryophoenix.