About the adventure

THE ANGEL ZARIEL On the plane of Mount Celestia, the angel Zariel chastised her peers for not getting involved in the Blood War. She felt that it was the responsibility of the angelic host to destroy evil in the multiverse, rather than stand back and watch demons and devils annihilate one another, destroying vast swaths of the multiverse in the process. In defiance of her superiors, Zariel left Mount Celestia and went to Elturel, where she rallied an army of warriors and trained them to fight in the Blood War. Zariel led her army out of Elturel amid a throng of cheering well-wishers and proud citizens. In an epic charge known as the Ride, Zariel's army entered Avernus and took the fight to the archdevil Bel and his infernal legions. Many of Zariel's warriors fought bravely, but for others, the horrors of the Nine Hells proved too great. They fled back through the portal, sealing it behind them and never revealing their shameful retreat and betrayal. ZARIEL'S FALL Zariel lost more than her army on Avernus. She also lost a hand, which was severed in battle. As her sword fell to the ground, Zariel ordered Yael, her most devoted general, to take the weapon and hide it, so that the devils would not destroy or corrupt it. Zariel's other two generals, Olanthius and Haruman, refused to leave Zariel's side. All three were captured and sent to Nessus, the lowest of the Nine Hells. There, Zariel was brought before Asmodeus, who welcomed her with open arms. The Lord of the Nine commended Zariel for her battle prowess and the strength of her convictions. He offered her rulership of Avernus, much to Bel's chagrin. By swearing fealty to Asmodeus and the Nine Hells, Zariel could bring her rage to bear against the demons and continue to fight in the Blood War, with legions of devils under her command. Zariel accepted Asmodeus's terms, completing her fall from grace. DIABOLICAL DANGERS The holy city of Elturel has disappeared from the Forgotten Realms and descended into Avernus, the first layer of the Nine Hells. This event came about as the result of an infernal bargain between the archdevil Zariel, who rules Avernus, and the treacherous High Overseer of Elturel, Thavius Kreeg. Zariel is capturing cities and using their citizens as fodder in the ongoing conflict between demons and devils known as the Blood War. Next on Zariel's list of cities is Elturel's neighbor, Baldur's Gate. The characters can be the heroes who descend into Avernus, save Elturel from certain destruction, and prevent a similar fate from befalling Baldur's Gate.

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