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.
Piercing Drill causes contact moves used by the Pokémon to hit targets through protection moves, dealing 25% of the original damage. Everything aside from the target's protective effects is still triggered.
Affected moves
The table below lists the moves affected by Piercing Drill, as well as the Pokémon that can have Piercing Drill and learn those moves.
The file name for its flavor text, home.sp.tokuseiinfo_Champions.TOKUSEIINFO_Champions_311, followed the same naming convention as other Abilities added in this update, namely Dragonize, Mega Sol, and Spicy Spray.
However, as Abilities were not given to any new Mega-Evolved Pokémon added in this update, no Pokémon were confirmed to have this Ability until the official release of Pokémon Champions.