I don't see it. Pls explain.
when i initially posted it i was thinking it might be Luna about to turn into Nightmare Moon (because wild guesses are fun!)
after posting it, i learned a few other things that gave me a different idea of what is going on
i'm now assuming it to be Luna struggling to keep the moon in check with her magic. i recall seeing another picture hinting that when Celestia and Luna disappear, the sun and moon remain in the sky simultaneously making it a permanent twilight. it's also possible that we're seeing a flashback scene

