Edit: I'm happy with goulking's suggestion to have Van Dashtalt as the cultural centre of the planet, although not the actual capital (as Lenk's main base is there). Note that the Slaaneshi cultists will probably be successful in this attack (unless I can think of a really, really good way to enable my characters to move towards the pole despite losing. Running in terror
towards Necrons not being a particularly smart thing to do, I've already discarded the option of fleeing north

). I'll make a Supplementary thread in a few hours (so as not to clog up the main thread, which is basically turning into an Imperial Briefing room

) unless anyone has any objections.