The Shiny Charm increases the chance of encountering a Shiny Pokémon, both in the wild and through breeding. This is done by generating two extra personality values to attempt to find one that is Shiny, effectively resulting in a tripled chance to find Shiny Pokémon compared to the base chance; from 1/8192 to approximately 3/8192 (roughly 1/2731). This stacks with most other modifiers which increase the Shiny encounter rate, such as the Masuda method.
Generation VI to VII
Starting in Generation VI, the base encounter rate for Shiny Pokémon was increased from 1/8192 to 1/4096. As such, the Shiny Charm's two extra rerolls now increase the chance of encountering a Shiny Pokémon from 1/4096 to approximately 3/4096 (roughly 1/1365).
Due to a bug, when breeding, if any personality value rerolls are applied the original roll is skipped, so the Shiny Charm only provides two rolls total for bred Pokémon, meaning there is approximately a 2/4096 (equal to 1/2048) chance of hatching a Shiny Pokémon without using the Masuda method. However, the Masuda method now provides one more reroll than in previous generations, so the chance of hatching a Shiny Pokémon when using both the Shiny Charm and Masuda method is unchanged.
In Dynamax Adventures, Pokémon normally have a 1/300 chance of being Shiny at the end of the adventure, which the Shiny Charm's two extra rerolls effectively boosts to approximately 1/100.
||A shiny charm said to increase the chance of finding a Shiny Pokémon.
|A shiny charm said to increase the chance of finding a Shiny Pokémon in the wild.