games / magic-the-gathering-ccg / cmb1
Mystery Booster Playtest Cards
Magic the Gathering CCGCode: cmb111-01-2019MTG: 2019123 cards
Rare · 123
### Mystery Booster Mystery Booster is a Magic booster set, designed for Chaos Draft. It has two editions. The Convention Edition was released on November 7, 2019, and the Retail Edition on March 13, 2020. The set contains mostly reprinted cards from earlier sets. Each Convention booster also contains a test card which may be used in draft, but not in constructed play. The set is not Standard-legal.
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