Grimorium Verum, or The True Grimoire

One of the most famous and practical of the black magic grimoires, the Grimorium Verum claims to be a translation of a work by Solomon. It provides detailed instructions for the invocation of various spirits, specifically those under the command of Lucifer, Beelzebub, and Astaroth. The text focuses on the tools of the art (the knife, the wand, the parchment) and the specific characters or seals of the spirits, detailing their powers and how to make pacts with them. It is noted for its blunt and operative tone, distinct from the more philosophical high magic systems.