A group of witches, wizards, sorcerers, and other arcane spellcasters who are tired of being mistreated, the Coven is a secret group of apostate mages that is the sworn enemy of the Cloister. They keep it very, very secret that they are actually one organization, and that when the Cloister busts witch camps, they are actually destroying coven settlements.
On the surface, what the Coven wants is freedom. The freedom to practice magic without being incriminated. However, there are extreme elements to the group, who desire not just freedom, but to strike back on those who persecute them. The Coven, as a whole, believes that nothing is evil unless you make it so. And this becomes even more dangerous for those outside of it, as demons and monsters are summoned without any guilt or remorse. When it comes to naturally evil magic, where should the line be drawn? The Coven believes that no such line should exist.