In Planescape: Torment, there are two varieties: those used by mages, and those of priests.

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N/A. Planescape: Torment is a fantasy role playing game that uses the Advanced Dungeon and Dragons rules with the Planescape campaign setting. Sorcerer's Guide to All Things Factional.
Torment follows the Advanced Dungeons & Dragons (AD&D) rules, which means that mages must first learn spells from scrolls by copying them to their spell book, which hold a limited number of spells depending on the mage's level and intelligence. Planescape: Torment Online Walkthrough by Montresor.

Read. Contains detailed descriptions of all factions, pictures of their factols/representatives and information on how to join them in the game. Planescape: Torment dates back to an early time for IGN Guides services, and a full-scale Wiki for this game has not yet been created. N/A.