WoW Forever Armory

Arcane 10

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  Improved Channeling · rank 5

  Gives your Arcane Missiles spell a 100% chance and your Arcane Blast and Arcane Wrath spells a 70% chance to not lose casting time when you take damage.
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  Arcane Concentration · rank 4

  Gives you a 8% chance of entering a Clearcasting state after any damage spell hits a target. The Clearcasting state reduces the mana cost of your next damage spell by 100%.
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  Missile Barrage · rank 1

  Gives your Arcane Blast spell a 20% chance, and your Arcane Wrath, Fireball, Frostbolt, and Frostfire Bolt spells a 10% chance to reduce the channeled duration of your next Arcane Missiles spell by 50%, reduce the Mana cost by 100%, and missiles fire every 0.5 sec.