Lord Dunhyld, Phantom of Anguish, is a unique Wraith spawned during The Matriarch's Bones event. He is the husband of Lady Dunhyld.
He does not appear until players collect bones from all three Funerary Urns in the event. The event can only be finished after he is defeated. In earlier versions of the game, killing him after that was not required, and he would despawn peacefully if not killed.
In combat, he has Fast and Extra Health affixes, and will attack along with the wave of Skeletons spawned by the final Urn.