By researching the ancient writings of Empyrean magic, the Archmages of the Arcanum have unlocked the secrets of a new kind of magic that the Empyreans called Aetheria. In ancient times, powerful Empyrean mages learned to infuse Aetheria in Dereth with pure mana to empower it. By infusing this Aetheria with pure mana stored in enchanted gemstones, they could coerce Aetheria to crystallize into patterns that the ancient mages called sigils. These sigils could be manipulated to increase personal power. The Empyreans found that it was the nature of Aetheria to grow in power as it was used. The more you used these Aetheria sigils, the more powerful they became.
Long ago the ability to recognize and manipulate Aetheria was lost. Although this magical energy wells freely from the menhir mana fields into Dereth, these potent magical energies have in recent times remained undetected as they flowed throughout the lands. That is about to change.
With the help of explorers, adventurers and mercenaries the Arcanum has drawn this Aetheric magic from the Menhir mana fields into specially prepared mana stones enchanted to hold Aetheric power. The Arcanum have traveled from the corners of Dereth to perform a complicated ritual. Calling forth ancient magics, the circle of mages were surrounded by hundreds of glowing gemstones infused with the Aetheric power of the menhir mana fields. The mages have enacted a ritual to reveal the Aetheria that flows out of the mana fields and rains down upon Dereth.
Once hidden from untrained eyes, the power of the Arcanum has caused this Aetheric magic to be revealed. The Aetheria appears as three distinct colors, as it once appeared to the mystic sight of ancient Empyreans. Now that the Aetheria that flows from the mana fields has color and has coalesced into form, it can be found on all manner of creatures that inhabit Dereth. More importantly, the Arcanum has agreed to teach those it deems worthy to empower this Coalesced Aetheria so it once again forms into the ancient sigils of power and can be wielded by those who have learned its secrets.