This student teaches the basic death spells for the School of Death. Apparently he was the top student until the class was cancelled when the teacher Malistaire disappeared. You can find Malorn Ashthorn in Ravenwood standing next to a large ravine where the Death school used to be. Malorn will only teach you basic death spells. You have to find the death professor Dworgyn in Nightside to learn more advanced death spells as your wizard progresses.