The Commanders of Chaos: Complete descriptions of 22 demon princes, including information on their personal realms and spell domains. These lords of the Abyss provide a complete pantheon for the powers of darkness.
The Henchmen of Evil: Over two dozen new demons, including a new race, the Qlippoth. These fiends provide challenges for characters of all levels.
The Thaumaturge: A new core class, a spellcaster who gains power through dedication to a demon prince. However, such power comes at a terrible price...
Tools of the Trade: New clerical domains and spells for the Thaumaturge and other evil spellcasters.
Abyssal Images: Stellar art from 3E concept artists.
Since the earliest days of roleplaying, demons have been the ultimate opposition of fantasy adventurers. Do your players have what it takes to defy the Abyss?