About Big Mac
Omg
I might be over thinking but here goes
BG’s cutiemark is a green apple, and sometimes with sparkles, right?
We all know it’s an animation error. But what if it was cannon?
Like, rarely, when Big Mac is at his best, his cutiemark starts to sparkle?
Eh, how’s that idea??! :D
What if all cutiemarks sparkle when the pony uses their talents to the fullest? And twilight is always exhuming magic whether she knows it or not and if she was striped of her powers, the sparkles would be gone?