I think I have a contender.
Clefairy's profile kind of glosses over it, but it's there.
Clefairy is a peculiar and friendly Pokémon often seen at night in mountains dancing to the moon. Cleffa is known to live around places at which meteorites have fallen, it´s believed to have come to the world from a shooting star. Clefable, an extremely rare Pokémon, flees when noticing the...
vsbattles.fandom.com
Magnetism Manipulation (Not combat applicable),
| Moon | On nights with a full moon, they gather together and dance. The surrounding area is enveloped in an abnormal magnetic field. |
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AFAIK, Clefairy can't learn anything like Magnet Rise, Magnet Bomb, nor Magnetic Flux. (The last of which is also awful Statistics Manipulation; It raises the Def & Sp. Def of ally-side Pokemon (User & ally if applicable.) with the Plus or Minus ability, but the only Pokemon that can learn Magnetic Flux at all are Electrode, Zapdos, Ampharos, Magnezone, Probopass, Klinklang, Magearna, Toxtricity, & Sandy Shocks. Of those, only Ampharos, Klinklang & Toxtricity can have Plus or Minus, making it awful for the others.)