Sleight the Mystifying and Extraordinary

After barely surviving a tornado, a small-time Unicorn magician finds himself in Changeling territory, where he is hailed as a savior marked in a prophecy, destined to face a great evil. Can the cowardly, selfish trickster fulfill the said prophecy, and become the stallion everypony needs? (Inspired by 'Oz, The Great And Powerful'.) (Cover image by Assassin's Creed Master)