The topic of magic... Earth had a pretty good grasp of it in a lot of media. A comically over-useful plot device that was as overpowered as the individual was capable of. Apparently, everything had magic, but Unicorns were the ones that floated shit with their horns. Twilight was always eager to show me any time I asked, and that helped me understand. Most Unicorns are specialized, or reasonably powered. The Unicorns I knew personally could teleport.