Uh, oh. Nurgle guy get angry. All Ork spies retreat! Me first!
I don't have a chaos army yet but I want to build one. I find it stinks to have your ok greater daemon possess your fully decked out chaos sorceror lord with tons of wargear.
In one of the WD, the Word Bearers Index Astrates army can get a 4+inv. save. It costs 40 points but It comes with a power weapon. It's called the Accursed Crozius (hence the chaplian).