User blog comment:Legionaire22/Possibly NCF idea/@comment-2253300-20130101174554/@comment-3258762-20130101193932

That gave me two ideas...Both highly unlikely but hell, i'll say them anyway

One is that, upon the whole "Warband starting to be rebellious" which i doubt would start in a second, he forces his few Sorcerers, who have been fooled into serving him and now are prisoners and slaves under him, to commence with a spell alike the Rubric of Ahriman, but with only the whole "turned to dust" thing, and then he has slave-psykers to lead them (Highly NCF)

Or

He has a "Warband" consisting entirely of renegade guardsmen and cultists.