If there is one thing that made me a Shadow World fanatic it was the Unlife & if there was one aspect of the Unlife that excited my imagination most it was the Priests Arnak. I hate these bastards (in best possible way) with a visceral disgust that I generally reserve for the NY Jets & hippies.
Their work is abhorrent nihilism masquerading as wisdom. They are perfidious underhanded misanthropic & they wrap themselves in the raiments of legitimacy crushing order, grinding life into dust beneath a millstone of apathy & ennui. Their impassive gaze hidden behind a mask of hope. Merciless, they contaminate the civilizations they infiltrate with easy answers that flatter the vanity of Man, they make greedy men proud of their avarice, lazy men proud of their sloth. The priest Arnak turn lustful men into predators, wrathful men into murderers, proud men into fools. They help the weak envy the strong & the strong resent the weak until life becomes the war of all against all & is emptied of meaning. All that is left is despair's carrion comfort as peoples, cultures, societies, races devour themselves in paroxysms of suicidal nihilism.
God I love to hate them.
Anyway I have never seen a suggestion of where they got the names of their orders so in my campaign each order of both priests & messengers is named after some hapless culture. It's songs, epics, histories, religion, & folkways reduced to nothing but a mirthless joke made by a sneering implacable servant of the Iron Wind.
Tell me about the Priests Arnak in your campaign, tell me of their methods, their ideology, their schemes and how they fail or succeed in pursuit of the annihilation of all things.