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Rank 1 according to the source: Gives you a 20% chance to avoid interruption caused by damage while channeling Arcane Missiles and a 14% chance while casting Arcane Blast.

Tier 1 · requires 0 points in lower tiers

Rank texts are being rechecked after a source update.

Rank 1 according to the source: Increases the range of your Arcane spells by 3 yards.

Tier 3 · requires 10 points in lower tiers

Rank 1 according to the source: Blasts the target with energy, dealing 95 to 104 Arcane damage. Each time you cast Arcane Blast, the damage of all your other spells is increased by 10% and the mana cost of Arcane Blast is increased by 175%. Effect stacks up to 4 times and lasts 8 sec or until any other damage spell is cast.

Tier 3 · requires 10 points in lower tiers

Rank 1 according to the source: Gives your Arcane Blast spell a 40% chance, and your Fireball, Frostbolt, and Frostfire Bolt spells a 20% chance to reduce the channeled duration of your next Arcane Missiles spell by 50%, reduce the Mana cost by 100%, and missiles will fire every 0.5 sec.

Tier 4 · requires 15 points in lower tiers

Rank 1 according to the source: Reduces the cooldown of your Fire Blast spell by 1 sec. Killing a non-trivial target increases the critical strike chance of your next Fire Blast cast within 20 sec by 25%.

Tier 1 · requires 0 points in lower tiers

Rank 1 according to the source: Your non-periodic critical strikes with Fireball, Frostfire Bolt, Fire Blast, and Scorch grant Hot Streak for 15 sec. Hot Streak reduces the cast time of Pyroblast by 25%, stacking up to 3 times.

Tier 4 · requires 15 points in lower tiers

Rank 1 according to the source: Deals 28 to 33 Frost damage to an enemy target. Deals 300% increased damage to Frozen targets.

Tier 3 · requires 10 points in lower tiers

Conflicting source structure: prerequisite

Rank 1 according to the source: Gives your Chill effects a 15% chance to grant you the Fingers of Frost effect, which treats your next 1 spell cast as if the target were Frozen. Lasts 15 sec.

Tier 5 · requires 20 points in lower tiers