Applebloom has grown tired of being at a disadvantage when it comes to earning cutie marks, and she doesn't want to be involved in Scootaloo's pegasus-related opportunities. There is only one logical conclusion to the belief: try to be a unicorn. Sure being great at magic is one thing, but how does it go once she actually succeeds, but more importantly, how long can her magic abilities last?
Originally an idea stemming from a random prompt from englishwitch on a forum in the "Twilight's Library" group. I started this because I thought it was for a write-off, but continued because I liked the concept.
Not sure if this is what was meant by the suggestion, but this is what I came up with when I thought of the prompt.