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. 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! Witchful Thinking is a great educational resource to familiarize children with numeracy and to strengthen their mental math ability in both addition and subtraction. It’s challenging for adults too! For 2 to 4 players, ages 8 and up.