Witchful Thinking

Some people make and sell bread for a living, while other people make and sell shoes. You, on the other hand, are a witch and you make and sell potions with other witches. You and the other witches are competing against each other to be the first to make each potion. Each potion requires a specific balance of ingredients. All you have to do is add in the right final ingredient to make the potion, and the potion is yours! Whoever has the most potions when the game is over wins.
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Witchful Thinking is a mathematics-based card game of mixing ingredients of different numerical values in a cauldron to produce a potion of equal value. Each Ingredient card has a number ranging from -5 to +5 and each Potion card has a number ranging from -19 to +18. Players race to adjust the formula in the cauldron by adding ingredients until the correct potion value is made. Once a player has the correct value, they win that potion!

—description from the publisher