A Recipe for Disaster

Villain apprentice Cal desperately needs cash to take his girlfriend to the Dreaded Ball. Prince Bueford needs out of an arranged marriage. Mullog, Bueford's manservant, would love to marry the princess and has the perfect solution: Bueford can buy a potion for disaster from Cal to disrupt the betrothal. Then Mullog can rescue the princess and everyone can live happily ever after. How could a little disaster go wrong?