At the start of the Boss Turn, put one Boss Counter on this. Then each player puts a Doubt on each Clash card they control with the highest attack. Then they may send an Accessory they control to Oblivion. If they don’t their Contender gets -3/-3 until the start of the next Boss turn.
If an opposing Clash card is defeated by clash damage, put a Boss Counter on this.
When the players advance, flip this.
Skull: If there are five or more Boss Counters on this, Minions get Close Combat and attack the Clash card with the lowest defense.