The first keyword he'll find is clairvoyance; it goes on to describe that Ioun grants it to those followers she trusts the most. That can't be the answer here, of course - there may be gods who would bestow power in someone without their knoweldge or permission, but The Knowing Mistress isn't one of them. But it goes on to describe the groups formed by such seers, which could lead in a more plausible direction.

Meanwhile, Zerxus...opens his mouth, closes it, and counts to ten in Celestial.

"Well. Yes. I just wasn't - I didn't want to - isn't he supposed to lie about things?"

It's not a chuckle this time, there's an outright burst of laughter in Bruce's head.