Periodic

Periodic
Periodic is a secret rule that is activated whenever a Royal (Jack, Queen, King, or Ace) is played. When it is triggered, the player must recite any math equation, whether it being algebraic, addition, multiplication, or cubing. It must be correct, as a wrong answer will result in a penalty card. While it is not mandatory, it is encouraged that other players say "That is a math." every time Periodic is performed correctly.