The World Writer
The world writer is a small typewriter, To be contained in a sealed and locked box without paper at all times,
If opened and given paper within 5m A person can type into it where anything they type will become reality.
The typewriter never needs an ink refill.
The only way to reverse the affects of the World Writer is to burn the paper, Once burned the person who burned it will hear the screams of the world for a few hours driving them insane.
On occasion this will attract other entities like The shadow and The phantom.