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If Nightmare Moon had a night dedicated to her, why couldn't she have one too?
She was just as powerful and feared, maybe even more so, but here she was in a tiny cave that could barely contain her.
Was she just not as important before her decent? Was she not as much of a surprise?
She was once a much needed witch to her village, and a kind hearted person.
Was it that she was just too lost in history? Was she from too long ago to be remembered?
That must have been it.
She was from a bygone era, a time shrouded in darkness that not many wanted to remember or dared to remembered.
She shifted in her darkness and opened her pure white eyes.
Maybe it was time for her return It had been centuries since she last showed herself
Maybe they needed another reminder of why they didn't go into the shadows
She smiled her fanged smile and pulled at the smoke and darkness around her, forcing herself into a form she hadn't taken in far too many years.
It is time.
She stepped out into the dimmer than usual moonlight and took in a deep breath
"They may have forgotten about me and my shadows, but soon they will remember why they fear the Dark."
She sighed and closed her eyes, thinking of sleeping princesses who controlled the sun and the moon.
"Little Sun and Moon, oh how your subjects will miss you."
Once she opened them once again, she was standing before the throne in Celestia's Castle.
And oh how you will fear me
She chuckled to herself and dissipated into black smoke, reaching out to find the two princesses.
When she felt them, she whispered words of change and turned the sisters into birds, Celestia a dove and Luna a nightingale, and formed cages around them.
She then reached out to the guards and filled their minds and dreams with with fear and shadows, waking many up from their slumber and forcing others to scream in terror.
Then she reached out further, past the castle walls and allowing her darkness to fill homes and minds alike, with tendrils of black smoke and plums of dark mist.
She pulled her self together from the darkness once again, and began to sing a lullaby as she walked up the steps to what was now her throne.
Once she was sat down, she formed a crown from the dark smoke and rested it upon her head, smiling to herself as she finished her song.
"Thus, I declare tonight, the night of the winter solstice, as Blair's Night."
She closed her eyes and hummed to herself.
And the night that Equestria comes to fear the name Blair Dark once again.