Mystery Booster - Booster Box [Convention Edition] (2021)

Please note this is the 2021 reprint edition given to WPN stores in August 2021. You can identify the 2021 edition by a printed label on the box bottom. Each booster box has 24 Mystery Booster Convention Edition 2021 packs. Every convention - exclusive pack holds fifteen cards: fourteen from the amazing main set and one Research and Development Playtest card. All Playtest cards have the warning 'TEST CARD - Not for Constructed Play'.

This Mystery Booster - Booster Box is great for collectors. To use it, just open the box and start exploring the packs inside. Remember, the Playtest cards are for testing and not for constructed play. Keep the box in a dry and cool place to maintain the quality of the cards. If you want to store the cards long - term, consider using card sleeves to protect them from damage.