“Arcana” by Scott Michael Stenwick
"Balzador was once a mighty Demon, but after opposing his master Coronzon he found himself exiled on Earth inhabiting a human body. Only one way remains for him to return home – binding together the world’s magick and joining in a war against the Archons, sworn enemies of the Demons, that would upset the cosmic balance of power. Standing in his way is the Guild, a magical order founded during the European Renaissance that holds the secrets of practical magick he desperately needs to complete his task.
After a terrible magical accident the Guild is divided and distracted. Guild initiate Michael Niemand and A∴A∴ initiate Samantha Davis must unite the members of their respective magical orders against Balzador’s machinations if any of them hope to survive. Complicating their task further, the government magick office has taken an interest in the Demon and the Guild and seeks to use both for its own purposes. As Balzador’s plans unfold, the two magicians struggle to stop the binding spell and find a way to destroy the immortal Demon. But will their efforts prove too late?"
Comments and discussion can be found in the channel