Limited Communication
Your information should be limited to what you can deduct from each other's clues. If you comment on your guess, don't give away any information about your side of the Key card.
If you guess a card that your partner marks as a red Order of the Phoenix Member, do not tell your partner what that card looks like on your side.
Do not give your partner advice on when to stop guessing, and do not tell your partner how many cards are left to guess unless all the cards you see as red have been covered by red Order of the Phoenix cards. …