Like the lesser spell of a similar name this spell summons a Dark Side spirit and compels it to serve the Black Order Mage.
This spell, however, permanently binds the creature to the service of the Mage, after a sacrifice of 8 points from Health, Phys, Int, and Spirit (divided as the Mage pleases). After that the spirit will do exactly as the Mage pleases, for however long it takes, till the Mage is dead. All the Mage must do is roll a successful test of Intelligence resisted by 13 to control the creature, otherwise it attacks him. As with the Lesser Spirit the Demon called up by this spell cannot communicate with its caster except in the most simple of ways, for instance indicating pleasure or hatred. They cannot carry messages nor be used as sources of information.