| Category | Magic Items, Tomes |
| Type | artifact |
The Tome of Infernal Secrets was authored by Demogorgon. He crafted this volume to disseminate his sway to any individual who discovers it.
The hefty volume possesses an astounding number of pages, more than its width would suggest. These pages, however, are perpetually disordered, though the information on a single page may sometimes suffice. Incantations and rituals to summon demons necessitate arduous study of the tome. Prolonged exposure to the book's contents has driven the faint of heart to madness and, in rare instances, unleashed pernicious magic upon the reader. The organization known as the Howling Wind was initially established with the sole purpose of harnessing their collective willpower and expertise to uncover the tome's secrets.
The influx of spells from the Book of Infernal Secrets has reached Bal-Kriav. Among the spells that have come to mortals through this tome are Wall of Ooze, Evil Weather, and Death by Thorns. The Book of Infernal Secrets is presently in the possession of Howling Wind.