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 Fortress-class vessel 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.