In the “The Crown Match” append the following to the paragraph starting “At any point at least 24 hours after the Contenders are decided”

Additionally, for each Contender, if that Contender has sent the Dealer a private message titled “Mask Change” since the start of the previous Crown Match (or at any point, if no Crown Match has happened yet), and the contents of said message clearly mention a single mask which the Contender wants to switch to, then immediately prior to starting a Crown Match the Dealer should first set the Mask of that Contender to the Mask mentioned in the message. (If multiple valid messages from a single contender exist, they should use the most recently sent message)