Start the game without specialty cards.
Every time a player wins a battle, they earn 1 specialty card, just like hitting a question mark box in Mario Kart.
As the game progresses, more specialty cards enter the game and the chaos slowly increases.
Challenge yourselves by playing with longer hands than 4 cards and build up the tension toward the final showdown.
Why it works
The game starts clean and strategic, then becomes more unpredictable every round.