Great League

The Great League is the Fourth League Challenge and contains 15 Battles The arena terrain & layout feature []
 * 12 Pokeball
 * 2 Great Ball
 * 1 Ultraball

Upon defeating this league you will have earned; The Great Medal, [] Diamonds, [] Support Candy, and the Amulet Coin.

You will need a Karp with a JP over 515k to easily beat this league