An event known as the Tainting of the Fae began in mid-107 CE when citizens of Magnagora slaughtered the Moon Avatars in Ethereal Serenwilde and fed them to Gorgulu, the Devourer of Souls. In a decision that was then uncharacteristic of Magnagorans, the city's leaders - including Daevos, Valek, Bricriu, Brona, Arilyon, and Morslade - would embark on a campaign to raise the Great Spirit of Crow and empower Him. Of course, followers of the Great Spirit of White Hart in Serenwilde struck back and even though Crow was raised, the White Hart soon vanquished Him.
The Champion of the ur'Guard, Valek Feyranti, pushed the Magnagorans to persist in this plot, and soon after they developed a plan that might allow them to finally outsmart their opponents. The sacred moonglory, vital to the forest of Serenwilde, required centaur colts to properly propagate and bloom. Serenwilde, enraged by this diversion, used the spear of Nintoba to summon His wrath upon the foul Magnagorans. The Marshall of the Serenguard, Gregori Mes'ard, led the combined forces of Serenwilde - including Jasper, Dumihru, Bau, Munsia, Terenas, Elryn, Citera, Athan, Ibaesha, Lyth, and many others - to the Cosmic Plane of Nil to strike at Gorgulu directly. Their hope was that the trapped essence of the Spirit Moon could be released if the Demon Lord were killed. Even with the blessing of Lisaera and allies in New Celest, the defenders of the Moon were unable to thwart Magnagora and it seemed as if all hope was lost.
The Magnagorans succeeded in empowering Crow and this time, they immediately drove Him to attack the forest of Serenwilde and snuff out the Flame of Glinshari. With the Flame extinguished, the Magnagorans were free to travel to Faethorn and kidnap the wild fae. Their plan was thus revealed: ritualists of Magnagora corrupted the very souls of the wild fae and then sent the tainted fae out into the Basin of Life to spread the Taint and leech power from the Pool of Stars and the Moonhart Mother Tree.