Sefom Invictus

Sefom Invictus was the name given to a presently-uncategorised Forerunner artifact, discovered by the Covenant and employed as the translight engine for the Covenant holy city-station of High Charity. Given the station's origin as constructed around the core of a derelict discovered over Tuluk'katho, with the Spine of the Gods said to "house elder engines", it is likely Sefom Invictus was the Forerunner slipspace drive used in the original Fortress-class vessel.