It’s mean aura after giving Luthor some of its powers stopped all negative thoughts on a Multiversal scale.
It even rendered Death Of The Endless from reaping souls.
Said Endless even said since the beginning of time, this was the first time she’d had a vacation.
The only reason the effect were reverse, was because Luthor broke the one rule the Zone Child set up for him to use its powers...no hurting Superman. But Luthor like the maniac that he is, couldn’t help himself.
Luthor at that point became close to an Omnipotent being.