This is a wizard AA ability:
Type: Activated, Refresh Time: 0:30:00
Requirements: Level 75, No previous ability requirements.
This ability, when active, will add additional damage to all Magic based spells that you cast. Additional ranks increase the amount of the damage added to each cast.
Level 1: 300 dmg
Level 2: 400 dmg
Level 3: 500 dmg
Level 1: 7 points
Level 2: TBA
Level 3: TBA
This info was gathered from the level 1 ability.