Larian Studios Forums Divinity: Original Sin 2 Divinity - Original Sin 2 - General How much Wits to see every secret?

There's a level 15 one in Fort Joy. The +4 Wits buff in the Pyro tree can help, certainly, but I think the chances of it going past 16 later on are high. I've heard that 20 is the number to shoot for, but that's just what I've heard. So 16 + Peace of Mind.