Experimenter's Familiar

Flying
{u}{r}: Flip a coin. If the result is heads, Experimenter's Familiar gets +2/+0 until end of turn. If the result is tails, deal 2 damage to target creature or player.
Izzet's experimenters shouldn't get too attached to their "little buddies", for there is a pretty good chance they will be fried in a haywire experiment.