What's the maximum amount of cards you can have in your sideboard?
verifiedIn competitions where a sideboard is allowed, a player's sideboard can include 10 or fewer cards.
According to Rule 601.1.c.1 of the Tournament Rules: "A player's sideboard can include 10 or fewer cards." Additionally, all cards in the sideboard must be valid Main Deck cards, and the standard limits on copies of named cards apply to the combination of your Main Deck and sideboard.
Correction History (1)
August 3, 2026 · reviewed by 121679855233400832
Rules update.
In competitions where a sideboard is allowed, a player’s sideboard can include 10 or fewer cards. According to Rule 601.1.c.1 of the Tournament Rules: "A player’s sideboard can include 10 or fewer cards." Additionally, all cards in the sideboard must be valid Main Deck cards, and the standard limits on copies of named cards apply to the combination of your Main Deck and sideboard.
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