Dezmyr Shadowdusk

Dezmyr Shadowdusk was a death knight, and joint matriarch of House Shadowdusk.

History
Dezmyr and her brother Zalthar was born to Yarlritha Shadowdusk, one of the three original sisters who Made the familys fortune by funding adventuring expeditions to Undermountain.

Unfortunately, the family came into an object, a tablet of black crystal that allowed contact with the Far Realm, that soon spread madness about the entire family.

Later, in the Year of the Harp, Shadowdusk Hold, their ancestral home, was burned to the ground, killing Yarlithra and her sisters, and soon afterwards Dezmyr and her brother were contacted by their uncle Xerrion Shadowdusk, who invited them to come to the new Shadowdusk Hold in Undermountain.

Years later after Dezmyr had shed her faith to Torm, Xerrion and his wife Margaraste journeyed into the Far Realm together, and were never seen again. As a result, Dezmyr and Zalthar became the new heads of the House.

Abilities
Dezmyr was a powerful spellcaster. Additionally, she possessed the endless life that death knights were given. Although some death knights could one day die by repenting, Dezmyr had gone too mad long ago for this to work.

Appendix

 * Adventures
 * Waterdeep: Dungeon of the Mad Mage
 * Waterdeep: Dungeon of the Mad Mage