The last of a species is called an 'endling'. Celestia is the endling for windigos.
The Elements of Harmony reunited Celestia with Luna, and Nightmare Moon with her own sister. But they also left a connection between their worlds...
After an eternal moment of failure and fear, Elizabeth Greene awakens once more. But... where is she? She doesn't understand.
The charred cinder of a star, the black hole Cygnus X-1, falls to the world of Equestria in the form of an organic. But this organic form is less than trusted, given what the one other did.
The Tantabus can feel.