Book of Prophecies

The Book of Prophecies (予知書) is a book that was introduced in Kingdom Hearts χ. It appears when traveling to another world and is the source of the fragments (フラグメント) or cards that are handed out by the Moogle. These cards allows players to use the power of the future.

Kingdom Hearts χ
According to Chirithy, before its creator disappeared, he bestowed his six followers with new names and gave five of them a tome of prophecy. These five followers would become the Foretellers and read the future written in the tome. One passage on the last page shocked them all:

To save the world from destruction the Foretellers use the power hidden in book and hand it on to the followers of their respective union.

Kingdom Hearts Re:coded
Following their defeat, Maleficent mentions to Pete that she heard of something similar to the Datascape, the ancient Book of Prophecies. According to a legend it's said to be capable of transcribing events that have yet to take place and even conjuring them, making entire worlds filled with beings and powers of those future events. Maleficent wants to search for a connection between the book and the Datascape, even wondering, if there is also a link between the book and Jiminy's Journal.