Board Thread:The Last Sovereign Discussion/@comment-25941257-20170924103337/@comment-32166397-20170924155951

I mean they got powerful disposable weapons, and they even dispose of themselves, it's a win-win.

I think Ivala's Wall and the Chosen are connected, probably being powered by the same source. It could be they managed to entrap MDB or Zelica to serve as a power source.