Requires 20 points spent in the "subclass prestige" tree.
Inflicts damage to the mage's enemies who are within the blast radius. The damage increases with distance.
The damage before any modifiers is 5500 at level 100. Intelligence and Potency will increase this effect.
Inflicts magic damage to up to 8 targets who are currently engaging the caster in combat. The damage is split evenly between the targets and increases with range. Doublecast increases the damage by the percent of doublecast the caster has.