Historical Rules · 25 August 2017
Rule 508.8
Official source text from the 25 August 2017 Rules release
If no creatures are declared as attackers or put onto the battlefield attacking, skip the declare blockers and combat damage steps.
Historical Rules · 25 August 2017
Official source text from the 25 August 2017 Rules release
If no creatures are declared as attackers or put onto the battlefield attacking, skip the declare blockers and combat damage steps.