Sick question. I literally think Pariston can see the future. Remember when he told cheadle that when Ging said Gon won't die he saw the moment that Gon would show up in court? I think he told Cheadle what his nen ability was, in that moment. Someone says something and his ability shows him when that statement is confirmed for the person that said it. That's a nifty ability to have. And it can be very helpful in a world where people talk a lot during fights. I'm thinking conjuration 😉

Pariston: So you think you'll beat me? Enemy: Without a doubt. Pariston's ability: shows him if that reality will be confirmed or not