He must wield the mythological Penis of Persuasion. I personally have never encountered one, but I have heard tales of a dick so golden that it causes those who fall under its spell to lose their ability to logic, reason or stand up for themselves. It has a female counterpart, the Pussy of Persuasion - a golden cavern of reputed muscular dexterity that men will throw all their time, treasure and common sense away. I too have never encountered this mythical beast as well. But apparently, they are all over the place from what Reddit tells me. I personally am glad to have never encountered either in the wild.