Future Deity (未来神 ; miraishin) is a family debuted in BS56. There is not many information on the background of the family. They are only known as the guardians who watch over the future. Currently, with less than ten cards in the family, the Spirits are more of a general support for the other decks, specifically those focused on Mirage and the "Proximate" and "Astroblazer" families.
All of them are XX-Rares, and have the family, Proximate.