Diamond Legal

The term 'Diamond Legal' is used in relation to the Legend of the Five Rings Collectible Card Game (CCG). 'Diamond Legal' is used as a general descriptor that covers all the game cards that can be used during the 'Diamond arc', also known as the 'Rain of Blood'. The 'Diamond arc' is a limited format in which only cards from the Diamond Edition base set and certain expansion sets released shortly before it and subsequently can be used. Cards that are 'Diamond legal' have the Diamond logo in the bottom left corner of the card.

The sets that are 'Diamond legal' are:
 * Thousand Years of Darkness
 * The Fall of Otosan Uchi
 * Heaven & Earth
 * Winds of Change
 * Diamond Edition
 * Training Grounds
 * The Hidden City
 * Wrath of the Emperor
 * Dawn of the Empire (partially)
 * Web of Lies
 * Enemy of My Enemy
 * Code of Bushido
 * Additional cards from the Imperial Herald, major tournaments, and others, grouped as Promotionals of the Rain of Blood.