Evil in Baldur’s Gate This heroic Dungeons & Dragons adventure book takes players from levelstoas they journey through Baldur's Gate and into Avernus, the first layer of the Nine Hells. Life in the Nine Hells. View Cover Art. Pronunciation Guide. Baldur's Gate: Descent into Avernus. Roleplaying Devils. Baldur's GateDescent into Avernus. Contents. I've included some character creation guidelines, information regarding the new background features, and information regarding the dark secret. Diaboli