I found the list on another forum, but thanks for the offer.

I got it for Auron first, and since his Celestial weapon increases damage done when he is injured, I could keep him at over 9,999 HP and still take advantage of it. It meant I had an easier time killing Master Tonberries and Sleep Sprout quickly, earlier. It probably is a near-worthless ability, as you say, but I like it.