Mendevian Crusades

In 4433 AR, Aroden defeated a cult dedicated to the demon lord Deskari, driving the survivors into the Lake of Mists and Veils and making the north of Avistan safe from demonic influence. If so, this protection ended with Aroden's death in 4606 AR. Golarion moved into alignment with the Outer Rifts, and the Worldwound was opened by the witch Areelu Vorlesh working in conjunction with her demonic patron, Deskari. Demons poured out, and overran the barbarian nation of Sarkoris. As the Worldwound grew ever larger, it came to be seen as a threat to the entire world.   The remaining clerics of Aroden and the clerics of his follower Iomedae took it upon themselves to defeat the demons and seal the Worldwound. Thus the Mendevian Crusades were born.