Nerath

(The image belongs to YouTube content creator Jyc Row) Nerath, The Goddess of Nightmares. Once, she was dormant within Princess Luna's mind, only to be slowly coaxed out by Luna's advisor Icy Cobalt, who turned out to be Naegissa, the High Priestess of Nightmares and Nerath's master pawn. She is demonstrated to be silent due to the inability to speak, communicating only to Naegissa through telepathic magic. She wages a constant war against the Goddess of Destruction, Aqasha. The two Goddesses try their hardest to kill the other, slaughtering and reviving the Equestrian citizens to use as undead minions. Nerath possesses Crystalkinesis, using crystals scaling from midnight purple to cyan, and just hearing her voice in your head drives you to an instant insanity, Crystallizing your body to become another of her mindless undead minions. Crystallized ponies are the undead killed by Nerath and Naegissa, they show crystals in shades of blue and purple jutting out of their body and obsidian as blood, as well as cyan eyes with purple pupils.