EDIT: There were some aliasing issues, and after figuring out a way to fix them, I touched this up a bit.
EDIT 2 (sheesh!): Redid it again, basically just changed the zoom-in effect behind Celestia so that the part around her horn was black, and all that junk.
After seeing this vector ([link]
) of Celestia demonstrating King Sombra's dark magic, I decided it MUST be made into a wallpaper. So I made one!