She suggested that all the witches combine their energies to invent a
potion which would take away people's desire to live happily. So, one
night, all the witches gathered down in the swampy forest and worked
together on that evil spell. The spell was so powerful, and would need so
much energy to cast, that when one of the witches got one of the words
wrong, there was a huge explosion. So big was the explosion, that it
completely destroyed the forest