Konstantyn Chronicles: Not All Gold Glitters

AU - New Hogwarts faculty member Herr Professor Doctor Pavel Konstantyn promises to bring a new approach to the History of Magic. He joins forces to fight Voldemort, but secrecy about his own life and past makes people wonder. Some of his magic seems... disturbing. A/N: Every effort is made for characters to be canon-compliant, but some elements' timing may be shifted to serve plot