Loki, Trickster Outcast

Creatures you control have "{2},{t}, Sacrifice this creature: Create your choice of a 4/4 Bear
creature token with trample, a 2/2 Bird creature
token with flying, or a copy of target creature.
Put a haste counter on your choice. At the
beginning of your next end step, exile your
choice of token, then return this creature to the battlefield."
Flash