A minor correction- while I don't recall whether it revealed illusions or magic, it did also let Lion-O see things which were far away, such as where the other Thundercats were captured. It didn't have to be magical or illusory for sight beyond sight to apply; it only had to be something Lion-O could not see with his naked eyes.

And speaking of naked, I had a thing for the girl Thundercat whose name eludes me when I was about ten. (Cheetah or something that easy, I bet, but I honestly can't recall for certain.) Is that weird? I think it must be, but she was hot.