Flash Fire

When this Pokémon is hit by a Fire move, it takes no damage and its Fire-type moves increase in power by 50%. Further hits by Fire moves simply do no damage; they do not provide additional boosts. This power boost is lost upon switching out. Will-O-Wisp does not activate Flash Fire if used on a Fire-type Pokemon, but if the Flash Fire Pokemon is not a Fire-type, Flash Fire will activate. If a Pokemon with Flash Fire is frozen, when it is hit by a Fire move, it will be defrosted and take damage without boosting Flash Fire.

Pokémon	Tier	Abilities	HP	Atk	Def	SpA	SpD	Spe	BST
Arcanine	BL	Flash Fire / Intimidate	90	110	80	100	80	95	555
Flareon	UU	Flash Fire	65	130	60	95	110	65	525
Houndoom	BL	Flash Fire / Early Bird	75	90	50	110	80	95	500
Ninetales	UU	Flash Fire	73	76	75	81	100	100	505
Rapidash	UU	Flash Fire / Run Away	65	100	70	80	80	105	500