mao

Any card not in a standard deck of cards is the 9 of Diamonds.
9 of Diamonds must be announced.
8s reverse play.
Aces skip the next player.
Jacks are wild, anyone can call a suit, first come first serve.
Spaces must be announced.
7s force the next player to draw a card, and the player must wish them a nice day. If that player THEN plays a 7, the train continues and they must wish the next player a VERY nice day. The verys stack.

Game wins when you empty your hand, you can deal back in with 7 and add an extra rule. Must declare "Mao" on a win, all other players must applaud or say "congrats".