Generation Ix
Piercing Drill
When the Pokémon uses contact moves, it can hit even targets that are protecting themselves, dealing 1/4 of the damage that the move would otherwise deal. Everything aside from the target's protective effects is still triggered.
Detailed Effect
When the Pokémon uses contact moves, it can hit even targets that are protecting themselves, dealing 1/4 of the damage that the move would otherwise deal. Everything aside from the target's protective effects is still triggered.
Pokémon With Piercing Drill
1 canonical Pokémon form can have this Ability.
Mega Excadrill 
