The Necrophidicon. This thin, magical volume is a specialized manual of golems that can be used to create a necrophidius (a type of golem described in full in the MONSTROUS MANUAL). Normally, the process requires a wizard of at least 14th level (or a priest of at least 9th level), approximately 10 days of labor, and at least 8,000 gp in materials.

If the wizard or priest is not sufficiently powerful, he or she may invoke the necessary incantations from the book, although this destroys the Necrophidicon in the process (the manufacture of the golem still takes the same amount of time and cost in materials). Many of these tomes were also used as notebooks by skilled necromancers and death priests and may contain the secrets of creating other kinds of necromantic golems.