Kostaltyn, supreme patriarch of the Cult of Ursun, is the unofficial high priest of the Great Orthodoxy, the name given to the unified cult that seeks to centralise the worship of all the gods of Kislev under a single religious hierarchy. Though there is considerable resistance to this change among many Kislevites of a more traditional bent, those who ignore the Orthodoxy's edicts risk being accused of heresy. To disobey the supreme patriarch of Ursun is to disobey Ursun himself, and all deemed guilty of such heresy will pay an agonising price.
