Amon

Amon is a composite primordial 'chaos spirit,' the source of all spirit energy in the world. It endlessly births spirits of the four elements and amplifies any spirit power. Its true form is a giant sacred beast resembling a komainu (a behemoth).

In the world's electrical metaphor, Amon is the 'power plant': the World Tree (the power line) converts and distributes its colossal force, while the keystones (substations) bind it to the tree. Feril is its vessel and fondly calls it 'Koma-chan.'

To save Reina, Feril gave half of Amon to Varis as a source of power. Under Varis's plan of 'distributed auxiliary keystones,' Amon's power is to be split into a microgrid of small stones.