My Little Pony: Friendship is Magic - The Seeds of Evil Sown

Just a thought. Since Trixie is the opposite element of Twilight and LD is the opposite element of Rainbow Dash, could we possibly start seeing the creation of the Diselements of Harmony next season? You know, one for each character or something.

Both Lightning Dust and Gilda remain un-reformed, and both of them were the antagonists of Dash episodes. I sense a pattern here.