Four Card Drax is a card game that is played in the Battletech Universe and represents a poker game. Its picture cards are not counted towards the hand, but alter the value of the cards you have. There are 4 suits -- Kurita [red], Steiner [blue], Marik [purple], Davion [orange] -- consisting of 1-10, Lancer, Rifleman, and Regent. The game is described in the House Marik Source Book, p. 120.