Honestly, I'll probably never have a Chaos army, as much as I like the pre-Heresy Death Guard and some of the models, like the Forgefiend, so this is pretty much as close as we're going to get to anything like Chaos, ever. Also, the fluff text talks about the boss as a sorcerer, so I decided to go Thousand Sons with these guys because I didn't see Khorne worshippers staying calm long enough