Each night, look at two players to see whether they are on the same team or not.
Question and answers
Good simple description. Potentially a lot of information to remember when playing with this card in a larger game. A way to make the information easier to remember is to each night pick 1 player and just being told wether different from the player selected previous night. Puts the memory burden on the GM too, however.
Answer is coming soon, hold on tight...