Historical Rules · 20 November 2020
Rule 613.2a
Official source text from the 20 November 2020 Rules release
Layer 1a: Copiable effects are applied. This includes copy effects (see rule 706, “Copying Objects”) and changes to an object’s base characteristics determined by merging an object with a permanent (see rule 721, “Merging with Permanents”). “As . . . enters the battlefield” and “as . . . is turned face up” abilities generate copiable effects if they set power and toughness, even if they also define other characteristics.