The upcoming Path to Carcosa cycle introduces a new mechanic: hidden. Hidden cards are placed in your hand and are not revealed to other players, and influence what you can and cannot do in subtle ways. Now, i've got an idea that would be cool for a scenario: all players pick a card at the beginning of the scenario, but one of those cards will instruct the player to work against the other ones, while pretending to work with them. Then at the third act it says that it seems like one of you is being possessed, and you must find it out. Okay, it would be kinda weird in Solo, but otherwise it can do for some really interesting gameplay. What do you think?