Harry Potter: Arcane Instability

Saved from a dying world, a magical monstrosity is thrust into the world of Harry Potter. Not happy with the way that the witches and wizards do things, he acquires four unsuspecting souls to fix the world their way, if not, it will suffer his. A.N. Just because it won't let me tag it as such, the story will have more than one MC, though one MC rules them all. P.S. I don't own anything related to Harry Potter. This is just something fun for me to do to pass the time. The cover photo is not mine, and if the original creator wants me to remove it, I will do so.