The Namco - Bandai Extra Chivalrous XIII Digimon Booster Box is a Digimon card expansion featuring the 13 Royal Knights Digimon, including Omnimon and Alphamon. It includes Tamer cards featuring characters connected to the Royal Knights, including Nokia Shiramine and Rina Shinomiya, and lets you build 13 different decks, each focused on a different Royal Knight.

Each Royal Knight also appears in an alternate illustration. The set includes cards with alternate illustrations or designs from the card types listed below.

• Contents: 24 Booster Packs
• Cards per Booster Pack: 12
• Total card types: 81
• Common cards: 22
• Uncommon cards: 20
• Rare cards: 18
• Super Rare cards: 12
• Ultimate Rare cards: 3
• Secret Rare cards: 2
• SP cards: 4