Historical Rules · 8 April 2016
Rule 805.5a
Official source text from the 8 April 2016 Rules release
A player may cast a spell, activate an ability, or take a special action when his or her team has priority.
Historical Rules · 8 April 2016
Official source text from the 8 April 2016 Rules release
A player may cast a spell, activate an ability, or take a special action when his or her team has priority.