Arcania, Witch Prodigy

+2: Exile a card from your hand. Deal X damage Divided to one, two, or three target creatures, where X is the exiled cards converted mana cost.
-2: Until the beginning of your next upkeep, you may cast a card you own from exile.
-8: Exile 4 nonland permanents. Until the beginning of your next upkeep you may cast up to four cards from exile without paying there mana cost.