The result of Vauraki's wrath directed by Axtrami's will. The Sila'Khrysath is the elemental embodiment of the fury of the desert. Woe to those who encounter the Great Sand Wyrm within the Karikun Desert!
Worse than those of the Shattered Orb are those who have fallen from the Bright Path and Axtrami’s grace. Yet among them are some who have recieved the extreme blessing of Axtrami, to become glass themselves…
A plague has hit the local area.
In humans it affects only the most vulnerable, the children and the very old, and even than it's little more than a summer cold. 24 hours of sniffles and then it's gone, barely noticeable really.
To sheep however it is fatal and the whole economy of the area is in serious trouble. If this keeps up the area could well be facing famine.
Somebody (enter the PCs) must find the rare herbs needed to make a cure.