Animagus (Book One of the Illvermony Series)

Oliver Sayre is the descendant of the founder of The Illvermony House Horned Serpent. Oliver is the last in his line and an orphan who lived on the streets of New York. Despite his heritage, he was sorted into Wampus, for his warrior-like persona, and sarcasm. Oliver is not only the last of the Sayre line but the last of the Ravenclaw line, as his mother was impossibly Helena Ravenclaw, the ghost, making him half ghost. It's impossible for a dead person to give birth, right? Well, what would you say if I told you otherwise? After all Lady Magic, Lady Fate, and Lord Death have a very interesting story for young Oliver Sayre.