Historical Rules · 11 November 2016
Rule 401.2
Official source text from the 11 November 2016 Rules release
Each library must be kept in a single face-down pile. Players can’t look at or change the order of cards in a library.
Historical Rules · 11 November 2016
Official source text from the 11 November 2016 Rules release
Each library must be kept in a single face-down pile. Players can’t look at or change the order of cards in a library.