This story is a sequel to Worlds of Destiny

First chapter of rewrite completed, awaiting finish of Aeon Legion: Starlight chapter 4 for publish

The events of G5 and The Last Problem are ignored, but not entirely non-canon

Only implicitly a crossover, zero Sonic characters actually appear. I could hypothetically ponify the Eggman Empire or just rename it to CAIN (Cain's Agglomerate of Illegitimate Nations) and basically get rid of all the crossover elements right there.

Takes place at the same time as Shark Wars: Razor's Edge and Aeon Legion: Starlight

Untagged major characters: Celestia, Grogar, the Pony of Shadows

Follows up on some story elements from The Last of Skyros, but it's not too necessary to read beforehand

Equestria, as Twilight knew it, was gone. Starlight, Sunset, and Rainbow were in places she could not reach. And somehow, Nightmare Moon had returned.

Meanwhile, the Alicorn of Fire's latest attempt at overthrowing Equestria failed before it could even get off the ground. Now, she and her two most loyal servants seek to take advantage of Equestria's situation and rule the world.

Old foes returned. New enemies arose. And at the center of it all was the Father of Monsters. Grogar.

Meanwhile, Rainbow Dash finds herself trapped on the same mission that had separated her from her friends, in a world that she doesn't recognize. At least she won't be alone.