Rank 1: Gives your Arcane Blast a 8% chance, and your Arcane Barrage, Fireball, Frostbolt and Frostfire Bolt spells a 4% chance to reduce the channeled duration of the next Arcane Missiles spell by 2.5 secs, reduce the mana cost by 100%, and missiles will fire every .5 secs.

Rank 2: Gives your Arcane Blast a 16% chance, and your Arcane Barrage, Fireball, Frostbolt and Frostfire Bolt spells a 8% chance to reduce the channeled duration of the next Arcane Missiles spell by 2.5 secs, reduce the mana cost by 100%, and missiles will fire every .5 secs.

Rank 3: Gives your Arcane Blast a 24% chance, and your Arcane Barrage, Fireball, Frostbolt and Frostfire Bolt spells a 12% chance to reduce the channeled duration of the next Arcane Missiles spell by 2.5 secs, reduce the mana cost by 100%, and missiles will fire every .5 secs.

Rank 4: Gives your Arcane Blast a 32% chance, and your Arcane Barrage, Fireball, Frostbolt and Frostfire Bolt spells a 16% chance to reduce the channeled duration of the next Arcane Missiles spell by 2.5 secs, reduce the mana cost by 100%, and missiles will fire every .5 secs.

Rank 5: Gives your Arcane Blast a 40% chance, and your Arcane Barrage, Fireball, Frostbolt and Frostfire Bolt spells a 20% chance to reduce the channeled duration of the next Arcane Missiles spell by 2.5 secs, reduce the mana cost by 100%, and missiles will fire every .5 secs.