In the Yu-Gi-Oh! 5D's anime episodes "Return to the Spirit World", Part 1 and Part 2, Professor Frank hypnotizes his opponent, Luna, during a Duel Monsters tournament duel. In addition to having an ulterior motive of getting her to access repressed memories, he uses that hypnotic influence to get Luna to play her cards in a certain way that benefits him.
In the real world, would it be against the Yu-Gi-Oh! tournament rules to hypnotize your opponent during a tournament duel in order to get them to play tactically in your favor? Is there any rule that would actually prevent this*, or would it entirely be a matter of the judge using his discretion to call out bad sportsmanship?
* I'm not expecting a rule that says "You cannot hypnotize your opponents", but am instead wondering if there might be a rule that covers this sort of behavior, like perhaps one that says you can't interfere with your opponent's decision-making.