Historical Rules · 13 July 2018
Rule 805.5b
Official source text from the 13 July 2018 Rules release
If a team has priority and no player on that team wishes to do anything, that team passes. If all teams pass in succession (that is, if all teams pass without any player taking any actions in between passing), the top object on the stack resolves, then the active team receives priority. If the stack is empty when all teams pass in succession, the phase or step ends and the next one begins.