In most games with trumps, one of the four suits is identified as the "trump suit". In the simplest case, there is a static trump suit such as the Spade suit in the game Spades, or a dedicated trump suit in the Tarot family (in addition to the other four) is featured. More often, a dynamic trump suit is determined by some means, either randomly by selection of a card as in Oh Hell and the original form of Whist, or decided by the winner or winning bid of an auction as in contract bridge and some forms of Pinochle. In certain games, such as Rowboat and Rage, the trump suit may change during the course of the hand, even from trick to trick. Some psychological variety is added to the game and makes it more difficult to cheat if the trump suit is only chosen after dealing.