Mafia 27. The problem of Bovblob residents

What role could be so dangerous that its ND would make the mafia bend the knee?

Almost any role from the tamer-killer circus block could disrupt the plans. The Block, for example, or the Puppeteer. Maybe they decided to link the diadem with olive bones and wreaths; someone suggested this on the first day, it was even her. But if they used the Magician, they would have to deploy more powerful roles.