Page "Mao (card game)" Paragraph 46

To create a rule, one could pick a triggering condition, and then an action and / or game effect.

The spirit of the rule is generally something in good fun ; while rules that unfairly sway the game in favor of one player or to the detriment of one specific player are quite easy to concoct (" Every time James plays a ten, he gets a penalty of ten cards "), they are also generally frowned upon as unsportsmanlike.

Rarely do rules have a penalty of more than one card, but certain rules have a large penalty attached to them, usually the result of a cumulative rule.