Members of this archetype in languages outside Japanese do not have the words "Ultimate Crystal" in their names, but instead include archetype conditions specifying that they are members. Prior to the release of Legendary Duelists: Ancient Millennium, all support cards for this archetype instead named "Rainbow Dragon" and "Rainbow Dark Dragon" specifically in their text. With the release of the Fusion Monster "Rainbow Overdragon", all members and support for this archetype received errata to make this archetype clear (except for "Rainbow Path", but since it only affects monsters in the Main Deck, it cannot search "Rainbow Overdragon").
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