This is by far the most degenerate request on /mlp/ I mean it combines fucking pedophilia, transformation, beastiality and/or xenophilia and whatever other fetshes you might have and Tbh I gagged a lil bit upon discovering this request
Please consider psychiatric help and reevaluate your life of you unironically browse this general and look at anon filly TF pictures
Actually is more of the idea of a fan of My Little Pony or a complete asshole suddenly become a pony child. With this comes a surprisingly rude pony in a world of pastel pushovers. Ideas expand from there.