Trixie, in her pursuit of ancient and powerful magicks, has found herself on an island chain just off the coast of Equestria searching for powers to win in another duel against Twilight. During her conquests in the island chain, she stumbles on a unique opportunity. She'll soon discover just how unique this really is.

Humanized ponies

Note: I haven't seen any of the fourth season yet, but I heard it has some history about the princesses and the Elements. This story ignores all of that since I haven't seen the 4th season. Tagging Alternate Universe just in case, though.