When a card's text supersedes a rule (via the Golden Rule), does it also override all subsections of that rule? Specifically, does Green Lee Sin's text overriding rule 702.3 also override 702.3.a, allowing him to receive additional buffs from other sources?

Ruling: Yes, when card text overrules a comprehensive rule via the Golden Rule, it overrules all subsections of that rule as well. Green Lee Sin can receive additional buffs from any source even while already buffed.

Nuances:

• The reminder text on buffing appears incompatible with Lee Sin's text as written, as it performs a check for existing buffs that shouldn't apply when Lee Sin's ability is in effect
• Lee Sin's ability states he can have multiple buffs but doesn't explicitly address the process of giving him more buffs while buffed - the rules-as-intended interpretation is that he can receive additional buffs from any source