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

Teeth

Launch razor sharp teeth that deal 300% weapon damage as Physical to enemies in front of you.

Unlocked at level 17

Frozen Lands

Enemies in the Land of the Dead are periodically frozen.

Unlocked at level 43

Blood and Bone

Now also creates a Simulacrum of Bone, but the duration is reduced to 10 seconds.

Unlocked at level 69

Metabolism

Provides an additional charge but doubles the health cost.

Unlocked at level 60

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