A One-Round Living Greyhawk Theocracy of the Pale Regional Adventure
From the introduction:
Bahira, wizard of Ogburg, asks you to find some gems known as the Shards of the Uvalnoniz. She requires the Shards to complete a magic circle, a circle that is part of a powerful incantation. The incantation will strike a critical blow against a terrible evil that threatens the Pale. Chapter Five of Germinations. Unlike other chapters, it’s recommended that you play the previous chapters before playing this one.
An adventure for [character levels] 2 - 12.