Historical Rules · 23 August 2019
Rule 100.4
Official source text from the 23 August 2019 Rules release
Each player may also have a sideboard, which is a group of additional cards the player may use to modify their deck between games of a match.
Historical Rules · 23 August 2019
Official source text from the 23 August 2019 Rules release
Each player may also have a sideboard, which is a group of additional cards the player may use to modify their deck between games of a match.