Empowered Arcane Missiles

From wow.incgamers.com

Talent: Empowered Arcane Missiles
Effect: Your Arcane Missiles spell gains an additional % of your bonus spell damage effects, but mana cost is increased by a %.
Statistics: Rank 1 = Arcane Missiles + 15%, mana cost +2%, Rank 2 = Arcane Missiles + 30%, mana cost +4%, Rank 3 = Arcane Missiles +45%, mana cost +6%.