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

Convergence

Increase the width of the beam allowing it to hit more enemies.

Disintegrate's damage turns into Fire.

Unlocked at level 26

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

Lightning Hydra

Summon a Lightning Hydra that electrocutes enemies for 255% weapon damage as Lightning.

Unlocked at level 33

Calamity

Cast a short range Wave of Force upon arrival, dealing 175% weapon damage as Arcane to all nearby enemies and stunning them for 1 second.

Unlocked at level 59

Force Armor

Incoming attacks that would deal more than 35% of your maximum Life are reduced to deal 35% of your maximum Life instead.

The amount absorbed cannot exceed 100% of your maximum Life.

Unlocked at level 54