Blood of Vol

In the Eberron campaign setting for the Dungeons & Dragons fantasy role-playing game, the Blood of Vol is a lawful evil cult that reveres the ancient traditions of the elven line of Vol. A subsect of the group, the Order of the Emerald Claw, is devoted to serving Erandis d'Vol, the Queen of the Dead and last scion of House Vol. Cultists exist on Khorvaire, Aerenal, and Xen'drik. They see undeath as a path to divinity, and are fascinated by the literal and figurative meanings of blood. They invoke negative energy and manipulate bloodlines to achieve their goals. Despite the cult's overall evil alignment, there are many good-aligned members, who revere the undead as self-sacrificing champions in the war against death. The cult's domains are Death, Evil, Law and Necromancy, and the favored weapon is the dagger.

Lady Vol
Lady Vol, or Erandis d'Vol, is the last member of House Vol, and carries the thirteenth dragonmark: the Mark of Death. She is the daughter of an elf mother -- the matriarch of House Vol -- and a green dragon father. When her existence became known, both elves and dragons came together to destroy the half-dragon abomination and the House of Vol. To save her daughter - and the family bloodline - The matriarch turned Erandis into a lich just before she was killed herself. However, becoming a Lich caused Vol to lose access to the power of her dragonmark, which she seeks to restore.