In this rule

Historical Rules · 25 August 2017

Rule 715.1b

Official source text from the 25 August 2017 Rules release

Permalink

Exile every object on the stack, including the object that’s resolving. Remove all creatures and planeswalkers from combat. All objects not on the battlefield or in the command zone that aren’t represented by cards will cease to exist the next time state-based actions are checked (see rule 704, “State-Based Actions”).

Find this number in the current Rules