Though the PSV of every upcoming Egg can be predicted when doing Egg RNG (as long as you have the Shiny Charm or are using the Masuda Method), it is impossible to know which ones will hatch shiny without knowing your TSV first. Methods of improving shiny odds (like the Shiny Charm and the Masuda Method) simply change the PSV of some of the upcoming Eggs to match your TSV, making it more likely you will hatch one of them. Whenever you hatch an Egg whose PSV matches your TSV, the Pokémon will be shiny. Like every other feature, the PSV is predetermined for all future Eggs in your chain.
Likewise, every Egg you obtain also has a hidden value, the PSV (Personal Shiny Value-sometimes called ESV or just SV). This value is hidden (you can't see it listed anywhere in your game), but it is what determines whether or not an Egg will hatch as a shiny Pokémon for you. In addition to your TID, which you can see in your Trainer Passport, another custom number is attached to every trainer: the TSV (Trainer Shiny Value). This mechanic allows you to freely navigate forward along the chain by accepting and refusing Eggs until you get precisely the one you want. If you accept an Egg from her, you will leap forward by a certain amount of links in the chain (anywhere between 20 and 40), but if you refuse the Egg, you will only skip to the next one. Whenever the nursery lady offers you an Egg, you have the option to accept or refuse it this is how you advance through the chain.
Thus, you will be required to provide information about the parents you are using so the software can accurately predict what is upcoming. Since a lot of the hatchlings' features depend on the parents deposited (their species, gender ratio, Poké Ball, whether or not they are holding breeding items, etc.), the chain is dynamic and will be tweaked every time new parents are deposited. The software we will be using in this guide allows you to see a list of the upcoming Eggs in the chain and to search through them for one that matches the exact set of features you want. When looking at upcoming Eggs from the chain, each of them will be referred to and numbered as a frame. Think of all your future Eggs as an infinitely long chain, with each Egg constituting a link of the chain, also called an Egg seed or status. Everything, including their IVs, ability, gender, and shininess, can be predicted. Though you may not realize it, when you deposit two parents at the nursery for breeding, all features of your future hatchlings are already predetermined.
If you already know the basics of RNG, feel free to skip over the rest of this introduction! Beginners, however, should read on in order to grasp the mechanics of Egg RNG this will help you understand what you are doing and why it has to be done. Hang on tight because these will only have to be done once, after which you will be able to RNG Eggs for as long as you need!īecause this guide is meant to be beginner friendly, it will go into more detail than some experienced users might need. This guide aims to help anyone who owns Pokémon Sun, Moon, Ultra Sun, or Ultra Moon receive the exact attributes they wish for when breeding (IVs, gender, nature, shininess.) in as little time as possible.īe warned, however, that the steps to set things up can be long and tedious.
Unlike encounter RNG, which requires impeccable timing and calibration, Egg RNG only requires a lot of patience to set things up, after which it is relatively quick and forgiving.
Egg RNG in Generation 7 is probably the easiest entry point for someone who has never done any RNG manipulation.