"T-That's impossible! Illogical! Irrational!! I mean no disrespect but you're an earthpony, you shouldn't be to do magic without a horn! This is just - I mean - how does it - where does the aura - you can't just wriggle your hooves and - how does that even?! GAAAH!!" [TwilightSparkle.exe has stopped working]
You know, this kind of reminds me of something. Why are so many Ponies fascinated whenever a Unicorn Pony does a simple magic trick. That's like being amazed by someone snapping their fingers, acting like you've never seen it before when you have.
I like how that blue unicorn filly behind that bush (or whatever she's called) is using her magic to levitate the rock and how the yellow filly (or whoever she's called) is pretending to use telekinesis on the rock when she is actually not using it. I guess Twily's face says: