My first attempt at a role, don't judge me if it sucks.
???
Alignment: Mafia
Goal: Kill off the Town and anyone else who would oppose you.
Abilities: Choose someone at night to see all Private Messages to and from that player the next day, and listen in on any -possible- night chats that player might have.
Night chats will be anonymous -other than your own-.
Options: Becomes Mafioso if alone: Default: On
Can hear ALL PMs -makes night action only for finding night chats-: Default: Off
Extra: If he is Witched/Bussed into targeting himself, then his own night chat becomes anonymous, and he is unable to talk in it.
Investigative Pairings: --- (Preferably the same as the Spy, gotta make those PM tests even less reliable)
Sheriff Result: Your target is a member of the Mafia!
How it can affect the game: Makes PM tests less reliable, especially if the option to hear all is on. Can inform the Mafia if there are Masons/Cultists/Jailors and this allows them to possibly get secret claims, and possibly find out who someone is converting, which forces those roles to be much more careful, and with the Jailor, this makes it much harder to do his job unless he jailed a confirmed scum and needs no claim. He can quite easily target the Mayor if he reveals and then get all the claims to him, and results, allowing the Mafia to have almost complete knowledge of everyone's role in the game, and this allows them to pick their roles much more efficiently.