Soul Changer (слэш)

“I’m cold,” said the soul in the jar labelled H. J. Potter. Severus pressed it closer to his chest, even as the phoenixes and the owls and the hawks flew overhead. Soul Changer was bottled like the souls he so coveted and it was only a matter of time before the prophecy came to pass. But Severus wasn’t going to give him up, not for all the treasure in the world.
AU in which Harry, Grindelwald, Voldemort, and Dumbledore are demigods.