Purchase Abyssal Beacons from any Faction Syndicate to reveal the Abyssal Zone ship on Ceres. Locate stranded Syndicate members within the mission to reveal where Defixios are located and bring them to Extraction. Exterminate the enemies onboard and get out of there! The new Resource, Vainthorn, needed to craft Dagath and the Dorrclave is awarded from these missions. If you want additional rewards and added difficulty, try the Steel Path variant!
Update: https://www.warframe.com/news/abyss-o...