INFOThis mod increases the base shiny rate to 1:125 by increasing the number of times wild Pokémon roll their PID, thus increasing their rolls to be shiny. Because Catch Combo is additive, you can stack it with this mod, but the base shiny rate here is already higher than a Shiny Charm Catch Combo 31+ as far as I remember, so you probably don't even need to use it. Also, since this mod is a change to PID spawns themselves, it means that they are "proper" shinies, as if you used a shiny cheat code in the older games (basically, if you catch a shiny with this mod, it is counted as a legal shiny and the fact that it's hacked is undetectable, not even to PkHex). Since this affects the base shiny rate directly, you can use it on static encounters that you would do soft resets for, such as Mewtwo or Sleeping Snorlax.
Update: There are three files, with names indicating their shiny rates. Pick whichever one you want (you can't have more than one at a time as they change the same file). :3