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

Project a beam of frozen ice that blasts enemies within 5 yards of the first enemy hit for 430% weapon damage as Cold and Slows their movement by 60% for 3 seconds.

Ray of Frost damage is increased by 405% weapon damage every second, up to a maximum total of 1240% weapon damage as Cold.

Secondary

Unlocked at level 2

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: 30 Arcane Power

Hurl an orb of pure energy that explodes on contact, dealing 435% weapon damage as Arcane to all enemies within 15 yards.

Secondary

Unlocked at level 5