The Dark Sisterhood

The Dark Sisterhood is a Hecate worshiping cult that has grown in power in the Plains of Mayfurrow. While the name sounds like it might imply it is female only, it has many male members. The name itself stems from the second moon, the Dark Sister, rather than a literal sisterhood.
The cult has a wide reach and many powerful members, though none have been able to discern the leader nor even the command structure. Its lieutenants are well known, the Riders of Pestilence, who bring death in their wake.
Leaders and powerful members of the organization include hags, powerful lycanthropes and even rumors of vampires and other dark forces, though this is unconfirmed. Lackeys and beasts often in its direct or indirect service include wolves, dire wolves, hellhounds, devils, lycanthropes, assassins and dark wizards.