Sci-Twi seems worried… Maybe it's because magic is hard. Maybe it's the creeping suspicion that Twilight is trolling her and just making up nonsense terminology. Or maybe it's because that thing is clearly a heptagram used for summoning demons, complete with the symbols of the Archdemons Charyptoroth, Lolgramoth, Amazeroth, Belshirash, Asfaloth, Agrimoth and Blakharaz. I don't know, I'm not good at reading people / ponies.
I wanted to do a triacosiahexacontapentagram for the magical symbol first, but… yea, let's not do that.
My Little Pony and related characters belong to Hasbro. Aventuria's arch-demons and their symbols belong to Ulysses.