If Shininju was in Pokemon Scholar in Violet, it would be the most broken Pokemon to have ever existed. With the ability Wunderguard, it can only take damage from super effective attacks. And now with the new terrestrializing mechanic in Scholar in Violet, if Shininju had the electric terror type and held the item Air Balloon, which gives you immunity to all ground type attacks, nor attacking moves would be able to touch it, leaving the only option to knock it out from things like residual weather damage, leech seed, perish song, and entry hazards.