Ngyr-Korath the Unchaga

Ngyr-Korath (The Ultimate Abomination or The Dream-Death) is a dark blue-green mist that causes a sense of terror as it approaches. Once close, an eye of flame forms within. He was spawned by fission of the Great Old One (or the avatar of) ‘Ymnar, and his nemesis is the Elder God Paighon. He coincides with the entity known as the Magnum Tenebrosum.

- Cthulhu Mythos Deities