The Eternal Lord (artifact)
Often considered the foundational text for the Mawtalmuninin sect of Ritualists, this morbid tome argues that Death itself is the only true power on Aeras. No other god has ever made themself so well known to the world's people as death has, and whilst anyone can doubt the existence of a diety, only the insane would doubt the existence of death. While suicide is not explicitly mandated - the Mawtalmuninin having not yet figured out how to spread their salvatory message from beyond the grave - the book does encourage living without care for one's continued wellbeing.