Instructions
Raise a team of six Pokemon to level 70 or higher. The final trainer's Pokemon are at level 70 on Mt. Battle, so you will need a comparable team. A high level team will make many of the early challenges very easy to conquer.
Make sure your team is balanced so you can handle a variety of enemy Pokemon types. Overlap the strengths and weaknesses of your monsters so you will be ready for anything. Each Pokemon should be a different elemental type and should know a variety of moves. An example of a balanced team would be Nidoking, Crawdaunt, Grumpig, Raticate, Pinsir and Aggron.
Keep the same six Pokemon in your team for the entire challenge. Exchanging Pokemon from the PC in the break areas will void the Johto Starter Pokemon prize. Do not leave Mt. Battle or you will have to start the challenge again. Choose between the three Johto Starters after beating all 100 Pokemon Trainers. Choose wisely, because the other two will become unavailable in your game.