Swain, Mizzet's Apprentice

If you cast three or more instant or sorcery spells this turn, exile target creature until it's owner's upkeep. Swain, Mizzet's Apprentice deals X damage to any target where X is the exiled creature's power
{u/r}: Target creature gets +1/+0
Niv-Mizzet was never proud of Swain's choices, but he was proud of his ideas.