In the new rule book there isnt a minumem amount of units you need to have in core instead 25% + of the avaliable points, so i decided to do a one unit army see what you think.

lord
sigvald the magnificant 425

core
92 warriors of chaos,
shields,
full command,
mark of nurgle,
banner of rage 1567

the idea is they just trubdle forward in 3 ranks of 31, ignoring terrain thanks to sigvald, hopefully not getting to shot up cos of the mark of nurgle and eventually get to combat. the unit should be big enough that you can barely manuvere around them (unless you can fly) and unless they take 31 casualties before they get to combat they should remain at full fighting capacity, also because of the new magic rules they should be almost as potent at dispelling magic as armies containing wizards. even if they do get beaten every time, the best bit will come from seeing your opponents face when they see 93 chaos warriors marching confidently through all terrain and shrugging off all kinds of shots as the unstoppability closes in on them *evil laugh*