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: 16 Arcane Power

Hurl a barrage of arcane projectiles that deal 400% weapon damage as Arcane to all enemies near the impact location.

Arcane Torrent damage is increased by 305% weapon damage every second, up to a maximum total of 1010% weapon damage as Arcane.

Secondary

Unlocked at level 12

Cost: 20 Arcane Power

Cooldown: 12 seconds

Conjure a Black Hole at the target location that draws enemies to it and deals 700% weapon damage as Arcane over 2 seconds to all enemies within 15 yards.

Mastery

Unlocked at level 61

Cost: 25 Arcane Power

Bathe yourself in electrical energy, periodically shocking a nearby enemy for 175% weapon damage as Lightning. Lasts 10 minutes.

Only one Armor may be active at a time.

Conjuration

Unlocked at level 17

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

Cost: 15 Arcane Power

Summon a multi-headed Hydra for 15 seconds that attacks enemies with bolts of fire dealing 165% weapon damage as Fire.

Only one Hydra may be active at a time.

Force

Unlocked at level 21