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

Frozen Lands

Enemies in the Land of the Dead are periodically frozen.

Unlocked at level 43

Metabolism

Provides an additional charge but doubles the health cost.

Unlocked at level 60

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

Cannibalize

Each corpse consumed also restores 3% health.

Unlocked at level 53

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