Oh you~ You are the best Lamia <3 See, Rarity is talking... but suddenly her voices goes all squeaky high pitch because of the amount of helium in the air! You'd have to breath in a good amount of helium to talk like that, so... DAYUM DASHIE TOOK DAT TAIL DOWN!
Pegasi farts are helium.
The word of Faust is law. It's her universe. Her characters. Hence why they can never remove her name off the front credits till they stop using them