Book of Vile Darkness

From the back of the book:

"Only the most indomitable minds dare to look up the malevolent thoughts and forbidden secrets bound herein. This corrupt tome is filled with deplorable wisdom, malignant ideas, and descriptions of creatures, rites, and practices most foul. Evil permeates every word and image inscribed within it"

-Orcus, Demon Prince of the Undead

This sourcebook for the D&D game is intended for mature audiences and provides a Dungeon Master with unflinching access to subject matter that will broaden any campaign. Included is a detailed look at the nature of evil and the complex challenge of confronting the many dilemmas found within its deepest shadows. Along with wicked spells, wondrous items, and artifacts, Book of Vile Darkness also provides descriptions and statistics for a host of abominable monsters, archdevils, and demon princes to pit against the noblest of heroes.

Expanded by;
Yet More Archfiends