Special Notebook

The special notebook of God is an unnamed object from Oda's God's Gift for the Future oneshot, though he lent it to Bran for one day.

The special effects of the "artifact" will only appear if you write with the Pen of Fate. Anything you write with it will happen, just like an agenda of the future. If you want to cancel the effects, you must use the Eraser of Fate. If you erase it with just any eraser, it will happen anyway.

Trivia

 * This notebook is similar to the Death Note, a book of the Shinigami that will kill the people who has their names written into it.