This is a Signature spell. Signature spells are free to cast.

Summon a spectral blade that strikes all enemies up to 15 yards in front of you for 168% weapon damage as Arcane.

Primary

Unlocked at level 11

Cost: 25 Arcane Power

Imbue your weapon with magical energy, granting it 10% increased damage. Lasts 10 minutes.

Requires Weapon

Conjuration

Unlocked at level 20

Cost: 25 Arcane Power

Focus your energies, increasing your Armor by 35% but decreasing your maximum Arcane Power by 20. Lasts 10 minutes.

Only one Armor may be active at a time.

Conjuration

Unlocked at level 28

Cost: 35 Arcane Power

Unleash a twister of pure energy that deals 1525% weapon damage as Arcane over 6 seconds to everything in its path.

Force

Unlocked at level 13

Cooldown: 15 seconds

Transform your skin to diamond for 3 seconds, absorbing up to 40% of your Life in damage from incoming attacks.

Defensive

Unlocked at level 8

Cooldown: 120 seconds

Transform into a being of pure arcane energy for 20 seconds. While in Archon form, your normal abilities are replaced by powerful Archon abilities, your damage is increased by 30%, and your Armor and resistances are increased by 150%.

Each enemy killed while in Archon form increases your damage by 6% for the remaining duration of Archon.

Mastery

Unlocked at level 30