Twilight Sparkle: Well! If we're setting up our ride, we'll need horses to pull it.
Rarity: Easily done.
Twilight Sparkle: Yeah. I "disarm" some mice.
Rarity: …
Fluttershy: What? No!
Twilight Sparkle: It'll be fine. They'll turn back later.
Fluttershy: If I'm carrying them, I can apply my Will save, right?
DM: Sure. Roll it. Well, they transform, but not entirely.
Twilight Sparkle: Good enough!
Fluttershy: No! Don't use innocent mice like that! Hmm… oh, I know! I disarm Twilight's "trap"!
Twilight Sparkle: What?
Fluttershy: Just apply cat. They're still mice, right?
Rainbow Dash: Huh. Does the mice-horses' extra mass count as energy fields?
Applejack: Heh, no, I don't think that cat's in any danger of becoming an evil overlord.
DM: It's enough to chase them off, until they change back and lose the cat.
Twilight Sparkle: Great. So now how do we get horses to pull our carriage?
Rarity: Easy. We don't. It was described as "pony-drawn", not "horse-drawn". One Diplomacy check, and…
Twilight Sparkle: I keep forgetting. Why bother seeking out trap testing grounds? You're practically a dungeon full of them.
Rarity: Why, thank you!