Arcane Blast

Gain the Arcane Blast ability: Blasts the target with energy, dealing 50 to 58 Arcane damage. Each time you cast Arcane Blast, the damage of all your other spells is increased by 10% and the mana cost of Arcane Blast is increased by 175%. Effect stacks up to 4 times and lasts 8 sec or until any other damage spell is cast.