Sons of Anarchy: Men of Mayhem – Calaveras Club Expansion introduces the Calaveras Motorcycle Club to your games of Sons of Anarchy: Men of Mayhem, allowing up to five players to play at once (or six players if you already own the Grim Bastards Club expansion). The Calaveras Club Expansion also includes the Black Market 3/4 Player Reference Card missing from many first print copies of the base game.