Kaleidoscope is a casual Magic Online-specific format for fans of multicolor decks.
Every non-land in your deck must be a multicolor card—including split and hybrid cards that are more than one color. Since it’s also a constructed format, the normal deck-building rules apply: minimum of sixty cards, optional 15-card sideboard, and no more than four of any card.
Like the legacy format, all sets and promotional cards are allowed.
As of 18th January 2016, two cards are banned in Kaleidoscope tournaments: