the dead god
eta: Louis is under new management. Further details to come. The dead god has been evicted, so what follows is merely historical.
[Sand born, spilling over dead lands to the sea.]
[Utilized in worship. No even transaction of a God of men, the dead god offered sanctified years for pans of marrow, reeds, and blood.]
[Caravaggio saw Isaac. A waning deity moves ponderously across a continent, harboring like a worm in the rituals of a new God.]
[West, west, west.]
[Edge of the world, where the sun sets, carrying a taste of the holy land, harboring like a worm, selling wares, common and dead but carrying forward. At the edge of the world slept a dead god from the holy land, slept in the mouths of worshipers, slept as a prophet of a truer faith. Still it lives on reeds, marrow, and blood. Now it rests in ditchwater, now it wraps itself in a host. Now its spine is their spine - there was a god of men. Dead god is a god in men. Dead god never passes away.]
The god has taken up residence in a human host, its conduit into our reality. It can wield its power on our reality, but only through the host, which it is bonded to. It may not transfer to another host. It may be sealed, but in all likelihood a full separation of it from its chosen host would kill the human in question.
Its long-term effects on its hosts on earth are not documented. The god's name has been stricken from the record, but there are stories of sects across the middle east and western Europe who channeled the powers of a non-christian deity for what seemed to be multiple decades, if not more. One was killed in the Inquisition, another by the command of a pharaoh a thousand years before, another by terrified folk in the west of Ireland in 1813.
What powers it exhibits are nebulous. Does it invoke the plagues of god on earth because it has some tie to that god? No christian symbol or rite appears to seriously affect it, so this seems unlikely. It is a clever being, and more likely it adopted these hallmarks of christian punishment to gain more followers by association, to siphon away lost lambs from the flock of man's favored god. Does it have the power of the Word? Certainly it can imbue those without faith with commands that they are terribly tempted to follow.
There is no question that its power is fed by blood, but it can also subsist without it. It prefers willing followers and willing hosts. Those who bound it to its current unwilling shell were punished.
Now it sets to the long work of making the best of its situation.