Unlike other Relics, it is not used in its original form or as a Symphogear, but is instead used to enable the Ignite Module function to be created.
The relic might be a complete but this has not yet been confirmed.
The sword is double edged and only cursed melodies can activate it.
In the Skáldskaparmál, the Dáinsleif was a cursed sword that was wielded by King Högni. Wounds inflicted by its blade never healed, and once it had been drawn, it could not be sheathed again until it had taken a life.