Both users of the yin and yang must consent to going through with this spell. Once the players have consented, the DM picks one to be an inflictor and one to be an afflicted. One person may be chosen to be both.

Inflictor: rolls 5 D20's and adds them together. The number rolled inflicts a powerful supernova of creation and destruction, sending a wave of energy damaging and/or killing anything other then the users and the allies.

afflicted: rolls a D20. If a low number is rolled, the afflicted dies, and cannot be resurrected until the DM allows it. The DM may choose for the afflicted to be dead permanently. If a high number is rolled, the user faints and/or is left with damage, possibly permanently. 

THIS IS FOR ME AND MY FRIENDS, DONT TAKE IT SERIOUSLY.