Frost Spikes

Leaves a frost patch that reduces the movement speed of enemies by 60% for 2 secs.

Bone Spikes' 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

Molting

Leaves a corpse at your original location when used.

Unlocked at level 49

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

Skeleton Archer

Raise a Skeleton Archer that deals 400% weapon damage as Cold.

Skeleton Archers increase your attack speed by 3% for 5 seconds each time they deal damage. Max 10 stacks.

Unlocked at level 19

Frozen Lands

Enemies in the Land of the Dead are periodically frozen.

Unlocked at level 43