Mystery Booster - Booster Box [Convention Edition]

Please note that this is the 2021 Reprint Edition given to WPN stores in August, 2021. The 2021 Edition is identifiable by a printed label on the underside of the box.
Each booster box contains 24 Mystery Booster Convention Edition 2021 Booster Packs. Each convention-exclusive Mystery Booster pack will contain fifteen cards: fourteen from the gigantically awesome main set, and one Research and Development Playtest card. Please keep in mind that all Playtest cards will have the following warning on them: TEST CARD - Not for Constructed Play.