Poor Lassie! He so shouldn't have to deal with Rarity! She'd keep wanting to fix his wardrobe and add diamonds to his guns, and he'd be all "Okay, don't panic, Spencer probably just gave me some sort of hallucinogen that caused me to see unico...what are you doing with my gun? Put that down!"

Jules and Rainbow Dash would be quite fun. In fact, I think she needs more Rainbow Dash in her life.

Shawn would be all "Gus, this is my new best friend! She's also psychic." And Gus would go "You're not actually psychic, Shawn." And Shawn would be all "That's what I thought, but then the magical unicorn showed up to harass Lassie, so I'm seriously considering the possibility."