When a stat of a Pokémon with this Ability is lowered by an opponent, its Special Attack is increased by two stages. Competitive will not activate if the Pokémon with this Ability lowers its own stats (such as with Close Combat) or if its stats are lowered by an ally.
If multiple stats are lowered (such as by Memento or Venom Drench) Competitive activates for each stat lowered.
Competitive activates before a held White Herb. If the Pokémon no longer has any negative stat stages after Competitive is applied, the White Herb will not have the chance to activate.