Defiled Forces

Remove Elemental Ailments when you Cast a Curse Spell
Refresh Duration of Ignite, Chill and Shock on Enemies you Curse [1]

Hex Master is a notable passive skill

Anointment

Blight anointment to unlock the passive:

Oil #1	Oil #2	Oil #3	Outcome
Crimson Oil	Black Oil	Opalescent Oil	Defiled Forces	Remove Elemental Ailments when you Cast a Curse Spell Refresh Duration of Ignite, Chill and Shock on Enemies you Curse

Version	Changes
3.20.0	Introduction to the game. It gives "Refresh Duration of Ignite, Chill and Shock on Non-Cursed enemies you Curse" and "100% chance to Remove Elemental Ailments when you Cast a Curse Spell", with small Passive Skills in the cluster now providing "Curse Skills have 10% increased Cast Speed." (Undocumented) Existing items that anointed with Hex Master, would allocated Defiled Forces instead, which located on the old location of Hex Master the notable.