Lightning Rod

Lightening Rod is an ability that draws all Electric-type moves to the Pokémon with this ability. While in later games this move will also affect Pokémon in double battles, in Polished Crystal it only affects single battles by powering up the Electric-type moves and not causing damage.

This ability is the main hidden ability on the Pikachu evolution line in Polished Crystal. Lightening Rod can also be found on Goldeen and Seaking in this game, which is useful as water Pokémon are weak to electric moves, so they are effectively nullified against them.