The Shifter Massacres
Sometime around 900 ASK, the Temple of Cybil began changing their rhetoric that all life is sacred, and instead began spouting hatred for Shifters. Shifters were a people that had some form of Lycan ancestry and took on humanoid aspects of those Lycan ancestors. This division of the church took on an image of a silver sun, and their following began calling themselves the "Natural Sons".
Over the course of decades, this rhetoric expanded from words to acts of violence. The church began hunting down shifter villages and driving them out of cities. Even in the Lupuswood, these zealots hunted down the shifters in hiding. They killed every single one they could find, as was the will of the secret hand moving these fanatics: devils. Devils from Infandus had made their way to Arnessia and infiltrated this church to enact their wicked deeds and offer souls to Fangor.
However, these massacres didn't go unpunished. A shifter druid was able to collect the ancient druid stones and destroy all of these houses of evil worship. Massive roots sprouted from the ground, massive waves crashed against temples, fire rained from the sky, and the winds blew temples to dust. The shifters were gone, but so too was this blight on the land.