When prompted, Eino took the picture he had brought, one of him standing next to a dead dragon, and placed it on top of the desk. He left it there while he listened to Professor Magnus' brief introduction and her first question. Naturally, he raised his hand when she was done speaking. "Transfiguration is the branch of magic that changes the target's nature, which differs from Charms, which only modifies the targeted object's behavior." To put it simple, transfiguration caused one thing to become a whole other different thing.