That's a very dangerous activity ! They are evil : during a war, they usually put some pieces of fire around the castle until it starts to burn and citizens have some arguments with each other. Usually, a wise man makes a wish for the conflict to end, but it has to be a passive wish.

     Whenever the king feels like it, he will spend a lot of money to fulfill your wish. And when that is done, They also made some smaller eruptions, for instance the famous "village hole" : it is quite useful but you have to know how to use it ; I'll explain.