moxie
Effect:
This Pokémon's Attack rises one stage upon knocking out another Pokémon, even a friendly Pokémon. This ability does not take effect when the Pokémon indirectly causes another Pokémon to faint, e.g. through poison or spikes. If this Pokémon knocks out a Pokémon with mummy, the former's ability will change without taking effect.
Pokemon with the ability: