Whether you're new to shiny hunting or not, Johto is a fantastic region to play through, and if you are looking for an easy shiny, it really doesn't get better than the red Gyarados.
How do I give myself a shiny Pokemon?
If two breeding Pokémon have differing original Trainers, their Eggs have double the normal chance of hatching into Shiny Pokémon. You can also increase the chance of Shiny Pokemon appearing by using a Shiny Charm, increasing the chance of them appearing from 14,096 to 34,096, roughly around 11,365.Jun 7, 2021