Arcomancy

While active, the wizard focuses his mastery over the arcane to cause any magic-based direct damage spell they cast to have a chance to increase the damage caused by a critical nuke. Additional ranks increase the effectiveness of the ability and the chance for it to occur. Ranks 1 through 3 work on spells between level 60 and 75, Ranks 4 through 6 work on spells between level 60 and 80, Ranks 7 through 12 work on spells between level 60 and 85 and Rank 13 works on spells between level 60 and 86.