TCGenius.aiOnix-GX (both yours and your opponent's) take 40 less damage from the opponent's attacks (after applying Weakness and Resistance).
This card stays in play when you play it. Discard this card if another Stadium card comes into play. If another card with the same name is in play, you can't play this card.
Brock's Pewter City Gym
Hidden Fates 54 · Trainer · Stadium
StandardNot legal
Regulation marknone
RarityUncommon
Standard uses regulation marks H and later, plus identical reprints of legal cards.
Released August 23, 2019.
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Build with this card
The Pokémon deck builder checks every deck against the Standard rules, and Genny can build one around Brock's Pewter City Gym.
Open the deck builder