Historical Rules · 5 October 2018
Rule 508.8
Official source text from the 5 October 2018 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 · 5 October 2018
Official source text from the 5 October 2018 Rules release
If no creatures are declared as attackers or put onto the battlefield attacking, skip the declare blockers and combat damage steps.