Say, I had an idea on how Shea could lose the battle without Mynh getting seriously injured. Just before Eight delivers the finishing move on Mynh, Seven (who has fallen in love with your Shaymin) offers to call off the battle and let Mynh stay ok if Shea goes into the prison with John and the others. If not, then Eight will knock Mynh out and Seven will throw him inside, so yeah. How does that sound. :D