The Black Diamond and The Witch's Curse by T-Pot

To most people, it appears as if Derek James is a typical college freshman. Yes, he is on a football scholarship at one of the most prestigious universities in the country, but other than that, he appears quite ordinary. But there is an extraordinary secret that Derek is harboring: he is a warlock! When he runs into fellow freshmen Matthias, Omar, and Tre’Vell, he is surprised to learn that they are also warlocks! Shortly after they all meet, however, the freshmen start getting attacked by terrifying monsters. Now, the four fast friends must overcome doubts and disagreements in order to discover the source of the attacks. But it may go deeper than any of them realize.