When I first saw this, I only saw Sombra as he tried to kidnap Flurry Heart. I never noticed that the sky outside had taken on the ominous brown-orange appearance from when Sombra ruled over the Crystal Empire as well.
This is going to be trouble for Cadence and Shining Armor if they can’t or are unable to prevent this with the Mane Six. Heck, Sombra may have gone after them first due to their part in his previous defeat so they couldn’t interfere with him taking Flurry Heart away.
S9 plot twist King Sombra and Queen Chrysalis are the rightful ruler of The Crystal Empire more than 1000 years ago before some creature curse them with darkness stealing happiness and loves instead of giving them.