Aura of Frailty

Becomes an aura that curses all enemies within 15 yards.

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

Unlocked at level 39

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

Frenzy

Commanded skeletons go into a frenzy, gaining 25% increased attack speed while they attack the target.

Unlocked at level 19

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

Metabolism

Provides an additional charge but doubles the health cost.

Unlocked at level 60

Shallow Graves

Every 10 enemies killed extends the duration by 1 second up to a maximum of 2 seconds.

Unlocked at level 53