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

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

Wormhole

After casting Teleport, you have 3 seconds to Teleport 1 additional time.

Unlocked at level 31

Conduit

Enemies hit by your attacks restore up to 3 Arcane Power.

Unlocked at level 38

Crystallize

When you are struck by a melee attack, your Armor is increased by 20% for 30 seconds. This effect stacks up to 3 times.

Unlocked at level 31

Arcanot

While the Familiar is active, you regenerate 4.5 Arcane Power every second.

Unlocked at level 50