Mágos tis Katastrofís(Sorcerer of Destruction)

Takes place after the Sea of Monsters. Percy remembers what Circe said about Annabeth becoming a sorceress and wonders if anyone came become one. After a trial run on himself he finds out that he can do magic. Percy finds himself one a new path. One that will help him not only save the world and save his friends and family, but defends Kronos, Gaia, and the Gods. A destructive path