Harbinger of Doom
Originally a Gloriana Class Battleship known as the Magna Tyrannis, the vessel was the twin of the Vengeful Spirit. Older than the Imperium itself, the Magna Tyrannis served as Abaddon's flagship during the Great Crusade and Horus Heresy. After the Heresy, the Magna Tyrannis was renamed the Harbinger of Doom and still acts as Abaddon's flagship on occasion. Carrying five full companies of Chaos Space Marines, the Harbinger of Doom often acts as an escort for the notorious Planet Killer.