EDIT: I am so sorry, I wasn't looking. Please move this to the right forum. I didn't see where I was posting it. Apologies for the confusion, etc.
In an attempt to get the Salamanders Chapter Tactics into a Chaos warband, I gave Nihilan of the Dragon Warriors his own rules.
Nihilan would be a powerful Sorcerer, though obviously lower than Ahriman. With decent armour and access to the entire Pyromancy table, he'll no doubt be turning vehicles and infantry to flaming ash. His Warlord Trait is appropriate, giving his close-combat attacks a chance to do extra damage; of course you probably don't want him to get into assault to begin with.