Caz's nasty joke

when you cast Caz's nasty joke roll  1d* where * is the amount of participants (players + DM). If the number is equal to the participants you pick new roles for every one, keeping the characters but changing there controllers, you also pick who is going to DM. As you cast this infamous spell you feel everybody's soul being thorn out of there bodies and put into a different body. 

And when everybody is furiously yelling at you you declare it was just for 1 round ( 6 seconds) and that time has passed already while everybody was screaming.