Description, catalog fields, rules text, and how it plays—in one place.
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As it grows, the stone portions of its body harden to become similar to a diamond, though colored black.
Abilities, attacks, weakness & resistance
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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Onix (base6-84) is a Basic Fighting-type Pokémon from the Legendary Collection (printed as 84/110). It has the Rock Throw attack dealing 10 damage for one Fighting energy and Harden which, for two Fighting energy, prevents up to 30 damage to Onix during your opponent's next turn. Its high retreat cost and Grass weakness affect how it fits into a deck's strategy and mobility.
Catalog pricing data as of 25 Apr 2026, 09:27