“We shall swim out to that brooding reef in the sea and dive down through black abysses to Cyclopean and many-columned Y’ha-nthlei, and in that lair of the Deep Ones we shall dwell amidst wonder and glory for ever.”
Dagon, the Prince of the Depths, is an ancient demon lord who dwells in the lightless depths of the abyssal layer known as the Undersea. Dagon is known as a seer among the demonic inhabitants of the plane who offers secrets from eons long forgotten even by most of the technically immortal Tanar’ri. Most ordinary mortals haven’t even heard of the Prince of the Depths at all, but in some remote coastal areas, dreadful stories about the ancient demon have been passed from generation to generation for centuries.
But even in those regions, the influence of Dagon himself is subtle. Often, tribes of the kuo toa who revere the Prince of the Depths and wreak havoc upon the coastal settlements are the source of those stories. Sometimes, these tribes are led by a powerful initiate of Dagon who has glanced the forbidden secrets offered by the demon. Those priests are known as the Thralls of Dagon, devout and completely insane worshippers of the demon lord.
Rarer still are the Thralls of Dagon among the land-dwelling peoples, but even with them, Dagon’s promises of insight into ancient secrets and vast mental powers do not trail off entirely unanswered.
The ancient demon prince Dagon offers insight into the forbidden secrets of eons long past. Thus, the path of the Thrall of Dagon appeals to those who seek knowledge by all means and are willing to trade their very souls in exchange for the mysteries they long to learn. Most often these individuals are ruthless wizards, bards or clerics, but on rare occasions, even some druids decide to become thralls of Dagon. Sorcerers are rare among the Thralls of Dagon as they usually are not interested in studying ancient lore but long to increase their inherited magical powers.