I took the challenge and beat it with this team: Level 49 Steelix level 50 Torterra level 43 Rapidash level 42 Floatzel level 48 Garchomp level 45 Alakazam HOWEVER... I had to use over 50 hyper potions and revives because the champion's Pokemon usually OHKOs me.

You need to get Empoleon and Dialga to level 60 and train a grass type to level 55+, fire type to level 52+, Ghost type to level 55+, and any pokemon with good defense/hp to level 40+. My team: Infernape level 57 Roserade level 55 Floatzel level 55 Dialga level 59 Gengar level 58 Snorlax … Read more