Glacial Spike

Cast out a shard of ice that explodes on impact, causing enemies within 4.5 yards to take 175% weapon damage as Cold and be Frozen for 1 second.

Enemies cannot be Frozen by Glacial Spike more than once every 5 seconds.

Unlocked at level 13

Chaos Nexus

While channeling the beam you become charged with energy and discharge at nearby enemies dealing 115% weapon damage as Arcane.

Unlocked at level 48

Storm Chaser

Each cast of Energy Twister grants you a Lightning Charge. You can store up to 3 Lightning Charges at a time. Casting a Signature spell releases all Lightning Charges as a bolt of Lightning that deals 196% weapon damage as Lightning per Lightning Charge.

Energy Twister's damage turns into Lightning.

The following skills are Signature spells:

Magic Missile

Shock Pulse

Spectral Blade

Electrocute

Unlocked at level 52

Unrelenting Storm

Increase the duration and damage of Blizzard to deal 1810% weapon damage as Cold over 8 seconds.

Unlocked at level 60

Ice Reflect

Melee attacks have a 40% chance to create a Frost Nova centered on the attacker, dealing 75% weapon damage as Cold.

Unlocked at level 49

Obliterate

Release an enormous Explosive Blast that deals 990% weapon damage as Cold to all enemies within 18 yards.

Unlocked at level 50