The Hexblade Patron

Warlock Subclass — Xanathar’s Guide to Everything, adapted for Heretics of the Old Gods

Overview

A cursed weapon contains an entity. The arrangement is brokered through the weapon itself. Work with your DM on what the weapon-entity actually is — in Nuxan, this could be a relic of the old gods, an Aeorian-period artifact with something trapped inside it, or something that came up from the ruins and found a new home.