Cults are somewhat like guilds in that they provide a collection of powers for members. They also provide a communal spell point reserve for members. The powers are determined by the powers that the cult leader finds, buys and maintains. To attain powers for the cult, the founder must go to various NPC's and purchase spells. Cult spells drain five spell points from the user for every level applied.
Cults also have a hierarchical structure for members from initiates to high priests.