The Drachau are the six Dark Elf Dreadlords who rule the Black Cities of Nagarroth. Each Drachau is granted this position by Malekith the Witch King himself, and only maintains it for as long as Malekith wishes it. During that time frame, however, the Drachau are all but untouchable to the lower Druchii, for to try and go against one of the rulers of the black cities is to go against Malekith himself. That being said, the Drachau still must watch out for not only treacherous servants, but also the other Drachau and the Vaulkhar, as they will try and drag their competitors down in the eyes of the Witch King.
Writ of Iron
The Writ of Iron is a contract carved into a piece of solid iron, which grants a Dark Elf with the authority of the Drachau that granted him it. These writs are only given out for the most important of assignments, and woe betide the servant who fails. Those that fail their given task will see the Writ of Iron melted and poured right down their throats.