Anivia, the cryophoenix

Flying
At the beginning of your upkeek, put up to three
ice counters on up to three target creatures.
When Anivia, the cryophoenix dies, create a 0/1
blue egg token with "at the beginning of the
next end step, sacrifice this creature. Then, put
a card named Anivia, the cryophoenix from
your graveyard onto the battlefield".