Reiko looked around to make sure nobody outside their trusted group was nearby, then spoke quietly. "There has to be something. But the chances are that the "Something" we need is actually contained in a book of forbidden magic from the great war, and just finding it, much less using it, would be as good as declaring ourselves exiles.
The sort of Spell that would let a military unit share the power of a Magi or Demon would have been destroyed right down to everyone who knew of its existence after the war when they burned all remnants of the Magi Clans.
If the Familiar Summoning hadn't begun summoning back the ones they had cursed and killed, the entire species likely would have been taboo to mention and long forgotten."