Brock's Pewter City Gym - 54/68 - Uncommon - Reverse Holo Tweet Out of stock. $0.40 Wishlist Details Set: Hidden Fates Card Number: 54/68 Rarity: Uncommon Card Type: Trainer - Stadium Name: Brock's Pewter City Gym Finish: Reverse Holo Card Text: Onix GX (both yours and the opponent's) take 40 less damage from the opponent's attacks. (after applying Weakness and Resistance).