You cause a psychic disturbance around the target cursed by your hex spell or by a warlock feature of yours, such as Hexblade's Curse and Sign of Ill Omen. When you do so, you deal psychic damage to the target and each creature of your choice within 5 feet of it. The psychic damage equals your Charisma modifier (minimum of 0 damage).
Prerequisite: The Hexblade patron
You cause frost to swirl around a target cursed by your Hexblade's Curse, dealing cold damage to each of your enemies within 5 feet of the target. The cold damage equals your Charisma modifier (minimum of 1).