MAUW: Reactions adds three new creatures to the game, with different effects: The Kiwi lets you steal a cat Warrior from your opponent, and use it right away. The Ninox lets you take a Spirit cat from an opponent's stack, and place it flipped to the Mauw side in your area. The Tuatura lets you ward off an attack from an opponent trying to take one of your Warriors, and you get the attacking card in your hand. Each card has 4 copies in this expansion, adding 12 cards to the game.