This story is a sequel to The Eternal Sphere

Several years have passed since the Incident where the former noble, Crystal Silicon, attempted to attack Equestria using digital monsters. Twilight Sparkle was ready to create a new galaxy in the Eternal Sphere simulator using the experimental Project Zereth and use it to maintain the cycle of life and death in the galaxy.

On a vulnerable world called Azeroth, Twilight used a procedure called Project Ankh to reincarnate her old friends from a thousand years ago. Her fellow Element Bearers and Starlight Glimmer were reborn among the races of Azeroth.

Aside from the many dangers coming enslave or destroy Azeroth, a hidden threat lurks in the shadows. The Equestrian Liberation Front, seeking to end the reign of the Alicorns, have tracked the seven fragments of power they were looking for to the experimental galaxy. The ELF will do what is necessary to retrieve the fragments from under Sphere's proverbial nose, even hiding themselves among Azeroth's people.

The dark tag is because it's Warcraft. While it has some funny and quirky elements to it, there are also plenty of dark elements too, the BFA arc especially.

Reading Starcraft: Warriors of Purity and The Eternal Sphere isn't required, though the former will give context on how this AU came to be.