BlazeStrengthens Fire moves to inflict 1.5× damage at 1/3 max HP or less.
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Flash FireocultaProtects against Fire moves. Once one has been blocked, the Pokémon's own Fire moves inflict 1.5× damage until it leaves battle.
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Pokédex
It has a timid nature. If it is startled, the flames on its back burn more vigorously.
It flares flames from its back to protect itself. The fire burns vigorously if the POKéMON is angry. When it is tired, it sputters with incomplete combustion.