This is an OC alicorn story, and I guess you can say he will be powerful, but it goes with the story, if you give it a chance, I'm sure you will like it. It starts out with an unknown alicorn waking up in the ruins of a forest, with no memories and an ominous voice telling him to wake up. From that point on, nopony is safe.
(This is my first attempt at a fanfic, it's a collaboration between a friend and I, he gave the basic plot and characters, but I wrote it and am making the story from his ideas.)