Celestia and Luna were the closest of siblings, until Luna became jealous of her sister.
Cadance just married Twilight's brother, and now she rarely sees him. I wonder if Twily's going to become envious of Cadance? Maybe enough to get some Nightmare Moon vibes?
This image is my vision of what she would look like as an evil tyrant. Not drawn by me, I only write fics. Another commission from Tyrni and Candyquill, and the cover art of a future pony fanfic.