Greninja has this secret ability called Protein which can be obtained via Friend Safari. This ability is awesome as it allows to change your type to your current attack which means you get STAB (same type attack bonus) every turn plus also leaves your opponent guessing. Ended up costing me the battle here, but note that a return from mega pinsir would have taken care of the battle. Tried to be fancy here and it cost me big time. Still, awesome battle! Be sure to be on the lookout for part 2.