當ＨＰ因受到攻击變為1/2以下時，防御和特防降低1级，攻击、特攻、速度提高1级。
When an attack causes its HP to drop to half or less, the Pokémon gets angry. This lowers its Defense and Sp. Def stats but boosts its Attack, Sp. Atk, and Speed stats.
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