The Eye of Proteus was a powerful artefact capable of giving Gods power to gain control of realms normally outside of Their control. Used by the Triumvirate during the Chaos Wars to create the Kris Dagger for Indrani, Their demon general. A temporary alliance was formed between Twilight and Aegis to seal Indrani in the demon planes, and as a result, the Eye of Proteus was given to Twilight, Who then withdrew from further involvement in the war. The Eye of Proteus later resurfaced in the hands of Valnurana and Sartan.
Valnurana and Sartan used the Eye of Proteus to create a vortex that drained the power of the Darkenwood during the War of the Divine Child, forming the Fissure. Upon discovering that Sartan's scheme involved the kidnapping of Pandemonium, the Divine child of Eris and Aegis, Valnurana stole the artefact, promising to use it to help free the child.
Using the unique power of the Eye of Proteus to combine the powers of Their respective realms, the Patron Gods of each city created relics in each city of comparable power to the Fissure. The remaining five Fonts were called: the Well of Chaos in Ashtan; the Fontis in Hashan; the Icerune Crater in Cyrene; the Cauldron of Infinity in Eleusis; and Daybreak's Mirror in Shallam. Each of these could produce a warrior who, being born of the same power that bound the Divine child, could weaken the power that held Him.
After the War of the Divine Child, the Eye of Proteus was hidden, only to be mysteriously discovered by Dawn and Gladius, the remaining members of the Luminai. They were found preparing it upon a lonely promontory of rock on the Shastaan coast, where they attempted to use the Eye to cleanse the realm of the Chaos Taint that had been inadvertently unleashed by Eris during a backfired experiment. Despite warnings from the Gods that the Eye would be destroyed and place their mortal lives put in danger, they performed a ritual upon the artefact, seemingly succeeding in their efforts. Light spread across Sapience, lifting the Taint.
However, before the Taint was completely banished, the Eye faltered and fell into the sea. What remained of the Taint coalesced into a diseased cloud that lashed out at each city in turn. In response, the Fonts previously formed in each city produced powerful Guardians that repelled the Taint. Finally, Dawn, who had been broken and drained by her previous effort, used the last of her energy to summon the Phoenix and bond with its spirit, chasing the Taint deep underground. As a reward for her devotion and courage, Sarapis granted Dawn the gift of immortality, and she became Mithraea, Goddess of the Sun.
Twilight later drew the Eye from the ocean again, using it to establish dominion over a portion of the sea which He named Nocturne's Reach. A few Gods, particularly Miramar, saw this act as a violation of the Divine agreement but before outright war could commence Maya showed Her force, demanding peace and reclaiming the artefact before further harm could come to it.