My idea in this setup was to stimulate both teams to talk secretly with the help of tele and whisperer.
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To achieve this, orc and watcher could swap roles, and fiddler and silencer could visit the same person. To do this, tough, they would need help of their fellow partners.
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But could you trust in the person who is whispering you? How would you comunicate with him, the use of codes is extremely necessary.