Board Thread:Questions and Answers/@comment-10922879-20130617143901/@comment-11051098-20130624133521

True, he could age everything, so even Ulquiorra's Lanza del Relámpago wouldn't hit him.

I think Yammy's release form only had superior physical power because Uquiorra said any Espada ranked 4 or higher were forbidden to make their release within Las Noches, or else the dome would be seriously damaged. But that didn't happen with Yammy. I think the massive reiatsu of their releases would have been the cause of that, and Yammy in my opinion only had massive, superior physical strength.