The All-Essence. The Æther. It is the metaphysical element of Life itself.
Countless eons ago, the Hexeract split into 6 shards, and those six shards became all that is today. Those six shards, in essence, are known as Darkness, Light, Fire, Air, Water, and Earth. Each essence has supernatural creatures know as Elementals that came from them, and shaped the world together. The Enamysts have outlined their hierarchy and relations in the Dodecapeton Star.