[Timestamp Undisclosed]
Let me tell you a little story.
A certain legend about the Crystal Empire tells of a dark stallion known as Sombra; a stallion whose specialty was crystal, and himself made up of nothing except of the pure evil that consumed his thoughts. It goes on to tell about how he rose up against Princess Cadence, and then knocking her off her throne when her beloved Shining Armor wasn't looking. He had taken the former princess' position as ruler of the Empire, and for a while it seemed that all was lost. With the royal couple put away and the whole of what used to be their realm in chains, thanks to a ruthless dictator in power, it didn't look like the Crystal Empire could ever be saved.
But then the Mane Six, sent by Her Highness Princess Celestia herself, arrived to give the Dark Lord a beating. They would not lose. How could they? It was the perfect assassination plan: Make their way in undetected, make their appearance in front of Sombra himself without causing much of a fuss, and then silently kill the guy so he would never see daylight again.
They pulled it off; the evil king had taken his last dirtnap. Or so it seemed.
Personally, I think this a bunch of bullcrap. I mean, this is way too perfect. It’s cliche; an overused coverup. It looks like something to hide the real truth...but what is it? What if King Sombra was never killed? What if he’s still alive, but he’s in hiding, plotting his next strike on the Empire, or even all of Equestria?
What happens if he comes back?
Of course, nopony really remembers (or even cared, for that matter) about what happened almost two decades ago, which is around the time when the defeat of Sombra was supposed to occur. All everypony cared about was that after that time, the Crystal Empire suddenly woke up after being dormant for many years, and (somehow) quickly became Equestria’s leader in innovation, leading the way to Equestria’s future. Of course nopony would remember about what happened before that, except only as a little filly’s bedtime story. Of course nopony would remember what Sombra could be capable of, such as landing Equestria in an epidemic that would wipe out almost (if not all) of it’s population. No. Pony. Remembers.
So, what would happen if Sombra came back?
Well, to make a long story short, we’re screwed. Screwed in the head.