>>47454687That explains why gen.3 trainers use shiny pokemon only in special facilities rather than the main game, the trainers of the main game lack evs and a chosen personality but those in the facilities have it
The e-reader allowed the generation of special trainers or changing teams of trainers in the battle tower which also feature a shiny
With e-reader you can even access several minigames such as
https://www.youtube.com/watch?v=JRGx5xrBEfUhttps://www.youtube.com/watch?app=desktop&v=ZmhDaxzQrSU 