Iello Diamond - Micro Extension: Mise en Garde

Diamond: Treason! is a micro-expansion composed of 12 cards. All players start with 3 cards in their hands: 2 Decision cards and 1 Treason card.

Unlike other cards, the Treason card can only be played once per player and per game. During a Decision phase, you can select a Treason card to continue into the cave, but when you reveal it, you do so in front of another player.

If this player was exiting the cave, they must give you the value of 10 Rubis, which you add to your chest. If this player was not exiting the cave, then nothing happens.