List of Grimoire Cards/Frontier

"ARENA DESIGNATION: Frontier LOCATION: City Perimeter, Earth This lookout station at the edge of the City's borders was decommissioned in the face of increasing Fallen attacks shortly before the Battle of Twilight Gap. Refitting of the station post-battle was moth-balled when Lord Shaxx found that, amongst the dirt, dust, and rusting metal, the station was prime for live fire exercises. The runway layout of Frontier station makes it a perfect course to train for the rising craze of Rift-based assault."