"There's no discolouration, and the twists are still visible," Twilight pointed out as she observed the horn on the skeleton. "That suggests to me that it's natural, although, I have once heard dark magic be referred to as alicorn magic by my zebra friend Zecora. I didn't know why she called it that at the time, but maybe legends exist of this place in Zebrica, and these alicorns were the original practitioners of what we call dark magic, hence alicorn magic. Interesting. Where did you find that skeleton?"