When an opposing Pokémon raises its stats, the Pokémon with this Ability will also raise the same stats by the same number of stages as the opposing Pokémon.
This Ability does not activate when an ally Pokémon raises its stats, or when an opposing Pokémon raises its stats through Opportunist. Opportunist will trigger if an ally Pokémon or a Pokémon with this Ability uses Swagger, Flatter, Decorate, or Spicy Extract against an opposing Pokémon; in the case of Swagger and Flatter, Opportunist will activate after the confusion is applied. Opportunist will also trigger if an ally Pokémon or a Pokémon with this Ability uses a stat-lowering move against a target with Contrary. If multiple triggers happen at once (for example, Torch Song used by a Pokémon holding Throat Spray), Opportunist will sum them up.