Recently after completing Nova Mortis Ikora Ray still had a mission for me. After the weekly reset I talked with Zavala for the Dawning bounties. Zavala had the beginning for the Abbadon quest. I was excited but confused. I completed the mission and was given Abbadon. Has this happened to anyone else? I didn't make it clear, but I never got Saladin's Tag, so there isn't a legitimate reason why I got Abbadon besides a glitch.