Wait...so reverse disg?. Idk how this is a Ti when it doesn't do anything to collect info about something, should be TS. It has an interesting concept but... It doesn't contribute anything to the town not only that, it also confuses the town as the town will believe they have taken down a mafia/coven member but in reality there are still more mafia left than it should be ,making mafia have more claim space. It is also countered by the fact that you can look at the list, It would show 5 people on the list if there is an Informer, it would trick players that are new to the role but once people know that there are 5 people and one of them is "insert given fake role (Pm,Consig,etc) they wouldn't attack you just cause you're bringing more negative utility to the town than good utility or... just type anything in the mafia/coven chat as the mafia/coven member and whoever does that is confirmed evil, It doesn't say that you can't speak with mafia/coven but it doesn't also say that you may so... nice try though.
Suggestion: Give it an another ability so that it isn't completely useless. You could still make it a master of infiltration but here is my suggestion:
-Hides a random mafia/coven member (Cannot be the Godfather or Mafioso)
-Mafias/Covens can perform any action on their hidden mafia/coven member
-If you use your ability then it will show as if you are going to do an ability(clean/investigate/heal/hex) on player X in the mafia/coven chat
-You may speak with the mafia/coven but you will not know the name of the mafia/coven members
-If you die the hidden mafia/coven member will no longer be "Hidden"
-The Hidden mafia/coven member will know your name
-Cannot recieve the Necronomicon
Hidden mafia/coven:
-You can speak to the mafia/coven but your words will not appear to the chat
-You can still see the mafia/coven chat
-You will not know who your mafia/coven members are (To prevent just whispering to any mafia/coven member and say that there is a traitor amongst them)