"The Sorcery of Aphlar" by H.P. Lovecraft and D. W. Rimel

Written by Duane W. Rimel, and subsequently revised by H. P. Lovecraft.

This feels sadly incomplete. It's an interesting start to a story, but needs to be finished. Perhaps some budding author can do a sequel.

The follow along: https://en.wikisource.org/wiki/The_Sorcery_of_Aphlar