The Decreator
The Decreator went by a number of names, such as the Antigod, the Unmaker, the Eye of Horus to the Egyptians, and the Eye of Shiva to Hindus. It is the equal, opposite, and shadow of God created when God uttered "Let there be light!", making it the first shadow and the first instance of darkness in the world. It initially appeared as a giant, bloodshot eye in the sky. When it appears it makes the sky around break into pieces and the stars surrounding it blink out. It starts decreating slowly, first words, then books, then shelves, then libraries, etc. It was believed to be unstoppable and it possibly is, but it is possible to slow it down long enough for no one to notice what was going on. An entity of powers born out of the true, ultimate darkness, was born at the very same moment, and it came to be known as the Great Evil Beast or the Ultimate Darkness.
Read more about this topic: Cult Of The Unwritten Book