Can't stop thinking about how the "key to interdimensional fusion" has spiral patterns on it that are suspiciously similar to the spiral patterns on Ancient architecture, like the Watcher's Palace on Mare Lamentorum, the aetherytes in Elpis, the structures in Amaurot, and even the visual effect left behind over Zodiark's crater in Mare Lamentorum.
Could the key to interdimensional fusion be connected to the Ancients somehow.......?