Talk:Moons/@comment-3470751-20141113111320/@comment-25559529-20150122191716

But Fluttershy said "The other magical mirror only works once during each cycle of the Moon, maybe Princess Celestia can't back until the Moon cycle's back?" The second clause is refering to the mirror that leads to the evil Mane Six, so "other" would imply that Fluttershy is talking about the EG mirror. Plus, they mention Sunset Shimmer, so Fluttershy definitely knows about that mirror.

Luna says "If that was the case" followed by her talking about Celestia, so that means that the Reflections mirror is the one that doesn't open every cycle of the Moon.