Written for Grievousfan.

Princess Celestia thought she had found the perfect gift for Twilight Sparkle to celebrate her coronation. Who better than Princess Luna to teach her one of the most mysterious lost arts of Equestria, Dream Magic?

Unfortunately, Celestia could do with a bit of a lesson about Dream Magic herself, as something is dredged up from the recesses of her mind. Something dark. Something terrifying.

Something pink.