The nights are getting longer and there's a chill in the air, you know what that means! Hearths Warming is here!

Twilight and her friends get together for a little Hearths Warming Eve party but unfortunately, four Changelings, who refused to reform after Queen Chrysalis' defeat, are here to exact their revenge. Luckily, Rainbow Dash is still free, and she needs help to save her friends and the Princesses, who else does she know that has extremely powerful magic...?

...

Oh no.

This story takes place after the season 6 finale.

Written for Hey its that Pony for Jinglemas 2023 with the following prompt:

For my jinglemas gift this year, I would like a story about a pair of characters who have to "save" Hearth's Warming.
Characters: I'm not picky about who you choose for this mission, so long as at least one of them is a "villain", former or otherwise.
I find it amusing when an "evil" character needs to be "good".
My definitions of evil and good are very flexible for this. So as long as the first character could be considered an antagonist at one point in time or another, they will fit the bill. Also, their manner of "saving" Hearth's Warming can also be considered to be flexible.
Feel free to toss a third character into the lineup or more if you're feeling it. The choices are whoever you feel will work.
Theme: Comedy preferred, but otherwise you can go nuts with the theme.
Setting can be Equestria Girls or G4:FiM. No Gen 5, I'm just not invested in those characters.