The Return of Nightmare Moon

With the whole of Equestria at her disposal, she knew what she wanted: to get revenge on the land for being stuck in the moon. She hated the fact that the ponies in the town rejoiced when she was locked away, and forgot all about her. She'd make them pay. Pay with their land and their lives.

She flew to the fountain in the heart of the town and screamed, "You all forgot about me when I was imprisoned, so I'm going to make you all suffer!"

With that, she fired magic at a real coloured pony with a harp for a Cutie Mark into a potato. The rest of the crowd screamed and ran. Nightmare Moon turned some more horses into vegetables before she got a little more violent. One pony spontaneously caught fire. Another started to shrink until they had disappeared. Two others were turned into wood as the burning pony darted past. A grey pegasus with bubbles on her flank was turned into a rock, smashing on impact with the ground. She got even worse, one pony straight up exploded. Another started melting.

After the massacre, and after a few houses were set alight, the new ruler of Equestria then shot a ray of magic at the moon. Slowly it began to move forward towards the land. Nightmare Moon knew full well that she would die too, but she couldn't care less. She just wanted Equestria destroyed, no matter what the cost.

With a final laugh, the moon hit.