Chapter 17: Against the Demon Lords - Out of the Abyss

Chapter 17: Against the Demon Lords. In the culmination of Out of the Abyss, the heroes implement Vizeran DeVir's scheme to take on the demon lords. The archmage's ritual draws the demon lords together to fight to the death, leaving Demogorgon victorious but weakened as the adventurers face off against the Prince of Demons. Even wounded and weakened, though, Demogorgon is a legendary foe, and the fate of the Underdark and all Faerûn rests on the adventurers' final battle. Readying the Plan Over the course of their adventures, the characters have collected the components needed to create the talisman at the center of Vizeran DeVir's summoning ritual: The intact and unhatched egg of a purple worm (from the worm hatchery in chapter 13) The central eye of a beholder (from Karazikar in the Vast Oblivium in chapter 13, or some other source). Six feathers from six different angels (from the petrified angels in the Labyrinth in chapter 14) The heart of a goristro (from the demon slain by Yeenoghu in chapter 14) Thirteen timmasks sprouted from the footprint of a greater demon (from Araumycos's cavern in chapter 16, or elsewhere) Gromph Baenre's grimoire (from Sorcere in chapter 15) A few drops of blood or ichor from a demon lord (from Yeenoghu's battle with the goristro in chapter 14, or from fighting Juiblex in chapter 16) After Vizeran DeVir uses these components to create the talisman known as the dark heart to draw forth the exiled demon lords from across the Underdark, he expects the adventurers to plant it in Menzoberranzan. Having learned from Vizeran's apprentice Grin Ousstyl of the archmage's secret goal to see the city destroyed, the characters might decide to place the dark heart talisman elsewhere, determining the battlefield for their confrontation with the demon lords (see "Let This Be Their Battlefield"). Enacting the Plan Once the dark heart is in place, the ritual can begin. The adventurers and their allies take up a position not far from the dark heart,...