Crystallization

Each enemy hit has their attack speed reduced by 20% and your attack speed is increased by 3% for 3 seconds stacking up to 10 times.

Bone Spear's damage turns into Cold.

Unlocked at level 25

Brittle Touch

Enemies become brittle increasing their chance to be crit by 5% for 5 seconds each time they are hit with Corpse Lance.

Corpse Lance's damage turns into Cold.

Unlocked at level 21

Personal Army

Damage taken is reduced by 1% for each revived minion active.

Unlocked at level 26

Frozen Lands

Enemies in the Land of the Dead are periodically frozen.

Unlocked at level 43

Reservoir

Your maximum essence is increased by 100% while your Simulacrum is active.

Unlocked at level 63

Devouring Aura

Becomes an aura that consumes all corpses within 15 yards to restore 11 Essence per corpse.

The range of this effect is increased by 50% of your gold pickup radius.

Unlocked at level 38