Harry Potter Berserk crossover:
basically Berserk AU Gaiseric attempts to rid himself of the brand of sacrifice and have a fighting chance against the forces of the god hand and kills himself resulting in his soul spliting and going through reincarnation that would purify it and allow him to be reborn in another world. That however was spitballing and finger crossed hoping by Gaiseric and his allies, which in a miracle did work... with the unfortunate consequence of the god hand now being able to see other worlds and realities. With time that wound continued to grow and thus allowed the forces of evil to exercise more and more freedom to act and influence across dimensions. However they're for the time still limited in indirect miniscule influence. Cut back to the year 1994 and Harry is haunted by strange nightmares this not originating from Voldemort, as he is forced into a tournament against his will meets a fascinting and more importantly uncannily familiar looking blonde woman from Beauxbatons (I wrote that wrong I know I'll correct that later) and Fudge discovers a strange red misshapen talisman in drawer and whereever he puts it, it always finds it's way back to him.