Brainstorm

In the Arcane Mage talent tree, Brainstorm sits in the Mage class talents, row 8 of 10. It is a single-point node. Its row opens once 20 points are spent in Class Talents.

Connected above

The tree draws a line into Brainstorm from Tome of Rhonin.

• 
  Tome of Rhonin

  Critical strike chance by 2%.

Connected below

Brainstorm leads on to Time Manipulation.

• 
  Time Manipulation

  The cooldowns of your loss of control spells are reduced by 5 sec.

Same row

Also on this row: Charm of Aegwynn, Flow of Time, Mana Confluence and Charm of Medivh.

• 
  Charm of Aegwynn

  The critical strike damage of your spells is increased by 5%.

• 
  Flow of Time

  Shimmer's cooldown is reduced by 3 sec.

• 
  Mana Confluence

  Your mana costs are reduced by 5%.

• 
  Charm of Medivh

  Mastery increased by 3%.