I was about to ask something, but it looks like Thunder already answered it. I'm going to add an additional rule that two or more players must be involved in role-playing the battle. The GM counts as a player. I never expected any of you to try to cheat by having twenty friendly battles between your avatar and his/her Pokemon, but this rule is just there to prevent leveling-up by godmodding and make sure everyone has a fair chance to fight for their levels.