In this rule

Historical Rules · 25 August 2017

Rule 702.5c

Official source text from the 25 August 2017 Rules release

Permalink

If an Aura has multiple instances of enchant, all of them apply. The Aura’s target must follow the restrictions from all the instances of enchant. The Aura can enchant only objects or players that match all of its enchant abilities.

Find this number in the current Rules