Players are never too old to go back to class, and with all of the new magical discoveries being made, now is a perfect time to round out their education. Potion Explosion: The Fifth Ingredient introduces Ghost Ectoplasm to the classroom. It works as a wild ingredient for completing potions and creating explosions. This expansion also includes new potions, Reward and Scolding tokens, and the mysterious Ghastly Cauldron. *This is an expansion. The Potion Explosion core game is required to play.