Certainly a very enjoyable episode. Discord is a real pain, isn't he? You sure have to wonder how even Fluttershy manages to put up with him. Dashie did the only sensible thing when she basically said "up yours" right away.
Nice to see Cadance again (and a crystal pony!). I think both she and Rarity win awards for the best facial expressions in this episode.
Great song, very fitting for Discord. Daniel Ingram continues to amaze.
Some hilarious moments again: Twilight and Cadance getting roped into pulling Discord's flying throne thingamabob, everypony looking at Rarity (who promptly goes "What?") when Discord asks for a fainting couch, or Twilight's deadpanned "Oh." when she realizes where the flower they're looking for is (and how big it is).
Surprisingly action-oriented episode, too; I didn't expect that sort of critter in a show for 6-year old kids, either, although MLP:FiM has had moments like that before.
Fluttershy's hat was rather cute, and speaking of her, I wonder if we'll see those "breezies" she studied some time (another intertwined episode along the lines of Games Ponies Play and Just for Sidekicks would be cool, but I'm not holding my breath).
Was that Flash Sentry who accompanied Cadance? I gotta say, I hope he'll stay confined to the EqG spin-off universe, although perhaps I'm only judging him poorly due to the circumstances of his debut.
And who knew Star Swirl had such a large fan following?
Elsewhere: discussion in broniesaremagic. Episode follow-up on EqD.