I don't like change!
I mean, I understand it's necessary, but still. *Whines a bit*
Twilight becoming Trixie would also coincide with season 6 being the most watched season of anything in the history of everything.
Man, it's been over a year? Tempus fugit.
Twilight says immediately after that Earth ponies "... never used magic to clean up winter." Changing the seasons != controlling the weather.
If not the cutie mark, than what would give a unicorn the ability to do what only pegasi can do?
That's an interesting way to look at it. I'm just going off what's said in the episode.
"Well then, quote it."
That's the first line of my reply.
"Food that could only be grown by the Earth ponies."
That's what the episode says.
"...and you are pretty much saying that 'if a unicorn has a weather cutiemark, it can control weather' and that means there is a spell for that."
If there's a weather manipulation spell, an Alicorn could cast it, but not a normal unicorn.
1. I'm pretty sure Rarity could only do that because of RD's Cutie Mark.
2. Extreme? That literally what the episode says.
3. We're not talking about non-ponies.
It's not about agreeing or not. It's established in the episode "Hearth's Warming Eve" that food can only be grown by Earth ponies.