I read somewhere that Exodia being assembled in the hand is considered an immediate Special Summon of the head, which, if negated, offs the whole thing. If there is no negation/destruction of the head, the arms and legs immediately Special Summon and end the game at THIS exact moment. So, correct me if I am wrong, but since Exodia's head is summoned to the field, wouldn't Prohibition actually successfully negate the win condition by negating it's effect in the entirety?