The term 'Ivory Legal' is used in relation to the Legend of the Five Rings Collectible Card Game (CCG). 'Ivory Legal' is used as a general descriptor that covers all the game cards that can be used during the 'Ivory arc', also known as the 'A Brother's Destiny'. The 'Ivory arc' is a limited format in which only cards from the Ivory Edition base set and certain expansion sets released shortly before it and subsequently can be used. Cards that are 'Ivory legal' have the Ivory logo 
in the bottom left corner of the card or the Ivory logo 
in the bottom right corner of the card .
The sets that are 'Ivory legal' are:
- Coils of Madness
- Gates of Chaos
- Aftermath
- A Matter of Honor
- Ivory Edition
- The Coming Storm
- A Line in the Sand
- The New Order
- The Currency of War
- Twenty Festivals
- Additional cards from the Imperial Herald, major tournaments, and others, grouped as Promotionals of A Brother's Destiny.