The Southern Kingdoms
Once a pinnacle city of the Bright Gods, and powerful enough to keep Phyros in check, Helios fell into decline after a Slaaneshi cult took root in the noble houses. Helios became embroiled in a large and bloody internal war as the servants of the Bright Gods battled the cultists. Phyros invaded Helios at the peak of this bloody civil war and forced Phyrosian military law upon the Helisians. The servants of the Bright Gods rallied under Phyrosian control, while the cultists were prone to break almost every law the Phyrosians had. The resulting crack down on the cult of Slaanesh forced them into exile or hiding.
Native Helisans are fine gem smiths and their elite warrior priests wield sacred crystal swords in battle.