Whispers

The mane six stared at her in awe, she stared at them back. Her eyes were completely white, she was surrounded by a white aura. It grew until she was no longer visible. In her place was a ball of silver magic. Finally, it began to fade, and a monster like none other stood in her place. Her mane and tail were a black flame, her heart was too. Her grey coat became darker then any other, and an atrociously villainous smirk spread on her face.

"Hello there... Nice to... Meet you...!" She laughed. A spark rose from her horn, and she disappeared. The six ponies found her on the balcony, her wings unfolded, then leaping off. She flapped her wings rapidly and cast another spell. A shadow grew upon the crystal empire until it looked like Sombra had returned, if only him instead of her.

Twilight and her friends watched, feeling worthless. Twilight's purple aura surrounded her horn, and she teleported a cage on top of the alicorn monster. It fell with her trapped inside it. "Why are you doing this, who are you?" Twilight yelled.

"I am Darkness. That is the answer to both questions." Darkness lay her head down, her eyes grew white, and later, the unnamed mare sat in the cage, unconscious...