![Amazon.com: Mystery Booster Box Convention Edition 2021 | Magic: The Gathering | MTG | 24 Packs (360 Cards) | : Toys & Games Amazon.com: Mystery Booster Box Convention Edition 2021 | Magic: The Gathering | MTG | 24 Packs (360 Cards) | : Toys & Games](https://m.media-amazon.com/images/I/51QfZgcMEhL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Mystery Booster Box Convention Edition 2021 | Magic: The Gathering | MTG | 24 Packs (360 Cards) | : Toys & Games
![ChannelFireball on Twitter: "Each Mystery Booster pack appears to include a “Test Card” #MTGRichmond https://t.co/h1zzROmINR" / Twitter ChannelFireball on Twitter: "Each Mystery Booster pack appears to include a “Test Card” #MTGRichmond https://t.co/h1zzROmINR" / Twitter](https://pbs.twimg.com/media/EIzEtEKU0AAmxji.jpg)
ChannelFireball on Twitter: "Each Mystery Booster pack appears to include a “Test Card” #MTGRichmond https://t.co/h1zzROmINR" / Twitter
![Mystery Booster - Booster Box [Retail Exclusive] - Mystery Booster: Retail Exclusives - Magic: The Gathering Mystery Booster - Booster Box [Retail Exclusive] - Mystery Booster: Retail Exclusives - Magic: The Gathering](https://product-images.tcgplayer.com/fit-in/437x437/208523.jpg)
Mystery Booster - Booster Box [Retail Exclusive] - Mystery Booster: Retail Exclusives - Magic: The Gathering
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