The Hermetic Coven of Necromancers is a secret society who studies the Dreamy Side, dreams, death and the Necrode Kingdom.
High priest - Ultimate rank, there are only 3 any given time; choose the priests;
Priest - Allow novices to become nuns and organize meetings;
Nun/Friar - Practice and study necromancy under priests' guidance;
Novice - Attempt to join the coven.
The HCN lives in secrecy, so that very few people outside the coven even know it exists, and fewer still know what are its purposes and its inner workings. The HCN understands that knowledge is power. The whole coven works to study knowledge that would be otherwise secret to the Necrode Kingdom.
They also protect the world from abuse by Death and the Necrodes, often engaging in armed conflicts. They are at permanent war, but they also lack fixed headquarters and communicate via an allied constellation, the powers of which the Necrodes are not allowed harness.
Since Death gains the knowledge and memmories of each defeated member of the HCN, the coven is hermetic within itself, and many priests do not even know where the high priests could be at a given moment. Nuns, friers and novices have little to no knowledge of priests other than their own.