Nightmare of Hou'dal, Failed Assassin

Nightmare of Hou'dal, Failed Assassin is a Major Cabal Incendior who can be found in the Dungeon, Duality. They guard the first Standard which is required to access the Heartshadow Exotic Catalyst. The name implies they were one of the many assassins who would try to take Emperor Calus's life prior to his ascendancy to one of the Disciples of the Witness.