Description, catalog fields, rules text, and how it plays—in one place.
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No rules listed.
As it grows, the stone portions of its body harden to become similar to a diamond, though colored black.
Abilities, attacks, weakness & resistance
No abilities listed.
During your opponent's next turn, whenever 30 or less damage is done to Onix (after applying Weakness and Resistance), prevent that damage. (Any other effects of attacks still happen.)
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Psychic Energy (Unlimited Shadowless)
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Lightning Energy (Unlimited)
Lightning Energy (Unlimited Shadowless)
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Grass Energy (Unlimited)
Grass Energy (Unlimited Shadowless)
Grass Energy (First Edition Shadowless)
Onix (collector number 56/102) is a Basic Fighting-type Pokémon. It has Rock Throw for 10 damage with one Fighting Energy and Harden, which can prevent up to 30 damage during the opponent's next turn. A three-colorless retreat cost and a Grass ×2 weakness influence its use and positioning in early Base-era decks.
Catalog pricing data as of 14 Apr 2026, 19:23
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