Mummy in Hogwarts

Voldemort's search for immortality brings him to ancient Egypt were an ancient pyramid has been discovered. He along with four of his Death Eaters come in, but none of them come out. When the order arrives a young boy claiming to be an immortal mummy who killed the dark lord is all they find. The Potters decided to adopt him and show him how European Magic works. Harem/Harry/Strong