Put a spell on a stallion and he'll be happy for a day. Teach him how to use the darkness magic line for his own nefarious purpose, he'll take over the country. This is the story of Sky in the old country of Equestria.
Yes, my avatar is looking OP, but it is merely a transfer character I have that seems OP, but not in the sense you are thinking. Think multiverse. And there are way stronger worlds out there.