Sozohra, Spark Slinger

Whenever you cast an instant or sorcery spell,
create a 3/1 red Elemental creature token named
Sparkball. It has trample, haste, and "At the
beginning of your next end step, sacrifice this
creature."
At the beginning of your upkeep, if you control
three or more creatures named Sparkball, return
an instant or sorcery card at random from your
graveyard to your hand.