or, How to Give a Statistician a Stroke.
With this method, we will prevent the egg inheritance system from generating any IVs we don't want by ensuring both parents have the target IVs in all stats and all IVs on the inheritance frame match our target spreads.
It's a wasteful method, but it works and is very easy since you don't have to worry too much about PIDRNG and NPCs won't bother you so much (or at all, really). This is a good method if you just want your flawless egg now and don't want to be arsed with calibrating starting frames in PIDRNG or, well, learning anything particularly new.
OVERKILL METHOD: Letting RNG Reporter do the work for us.
Shiny: If you're lucky or particularly tenacious.
Required: **Target IV spread on Frame 8 of MTIVRNG.
**(Optional, but recommended) Target IV spread on frame 1-7 of MTIVRNG.
**Fairly easy, no need to bother with too much PIDRNG advancement if you don't mind hatching a few eggs.
**Guaranteed every egg will have your target IV spread as long as you hit your seed.
**Works great for Pokemon catchable in Unova, although you'd only bother if you really need an egg move, or just want a hatched 'mon for some reason.
**The chances of a particular spread appearing on any particular frame 8 is 1/1073741824, so you may be searching seeds for a while.
**Unless you're lucky, or abused your TID/SID (in which case you probably don't need this guide), don't count on this method for shiny flawless eggs, as the chance of having a shiny spread in PIDRNG on the same seed as your IV spread on frame 8 with the proper nature and ability in the first 1000 frames of PIDRNG is something like 2.8 x 10^-11, or 3 in 100 billion. You have better things to do with your life than listen to your Chatot say "Poop" 4000 times, so that's what the other methods are for.
**If you can't RNG in Gen IV, it will be much harder to get parents if the required Pokemon is not available in Unova.
Find a seed for your eggs.
Since you have already callibrated and found your DS parameters, I'm going to assume you know what the main screen of RNG reporter (the one with RNG Reporter 9.XX BETA in the title bar) and Time Finder are.
We're going to breed a flawless Venipede with Spikes/Toxic Spikes egg moves, for an example.
In Time finder, select Method 5 (Standard Seed)
and set the min and max frames to 8. Set the Encounter type to Gift Pokemon
. Hit ==31 on all of the stats, after all we're searching for a flawless spread. Note that the chance of this appearing is so low, we may have to search multiple months to find a seed. Optionally, if you don't care about flawlessness, you can set the attacking stat you don't plan on using to "None" and it will search for all 31/31/31/X/31/31 spreads, for example, which are much more common.
Open the 5th Gen DS Parameters tab and ensure that keypresses are set to 3. If your L/R buttons are disabled, skip them, but this will severely hinder your results.
Let time finder chug away for a while. If you don't find anything, change the month and try again.
This can be infuriating. Although, it is notable that if you're not interested in directly manipulating gender and nature, it doesn't HAVE to be on frame 8. If you find a spread on, frame 12, for example, you could just use normal advancements to push forward to frame 4, and then eggs would be generated on frame 12. Our ultimate goal with the methods which deviate from this one, though, is shiny flawless eggs, so I'm not going to cover this, since you can't really get shiny eggs this way.
Find a seed for your parents (Optional)
This can be easier, because you don't need it to be on a specific frame. I usually set the min frame to 1 and max frames to 6, so I only have to walk 128 steps with a max of 5 Pokemon in my party. Note that I set this to "optional." That's because you can just use your frame 8 seed for your eggs, and advance the MTIVRNG to frame 8 by walking 896 steps with a single Pokemon in your party.
I assumed you already know how to capture flawless Pokemon because this step I don't really feel like explaining when there are plenty of guides on the internet already. I've provided links to at least one of them, so you should learn that first. It's not very hard. In fact, it's mind-numbingly easy. So just grab a coffee or a matcha latte or whatever it is you enjoy drinking learn how to do that. Apply those skills to catching parents for your flawless egg.
In this case, we need a female Venipede and a male Pineco. Hey, both appear in Unova. You should use a synchronizer or PIDRNG control or heavy praying to get at least one with the nature you want your baby to have, so you can use the everstone when breeding. We'll need to raise Pinceo to level 28 to learn Spikes, and then evolve it into Forretress at level 31 to teach it Toxic Spikes at the move relearner.
Like they do on the Discovery Channel
Place your parents in the daycare. Give the correct-natured parent an everstone, unless you're feeling particularly in the favor of some deity or you plan to PIDRNG your nature, which you can, I just don't see why you would bother. Hop on your bike and then run around on route 3 until the old man tries to solicit you for illicit activities. DON'T TALK TO HIM.
Walk up to him and save your game. Then turn it off.
Hit your seed!
Hit your seed as if you were going to capture a wild Pokemon. As stated previously, I'm assuming you already know how to do this, so if you don't, I don't know why you're still reading this! After hitting your seed, load your game and pick up your egg (and hope that having its egg ripped out of its clutches didn't scar the parents emotionally somehow). If you want, you can verify that you hit your seed by flying somewhere with high-level Pokemon (you can fly to Victory Road, I think) and immediately catching a wild Pokemon, then checking its IVs. If you hit your seed, the Pokemon you catch should have the IVs from frame one of frames 14-20 of your seed. (From time finder, right click your seed and select "Copy full seed to clipboard." Paste it in the "Seed" box on the main screen of RNG Reporter, select Method 5 (Standard Seed) and hit "Generate" to get a long list of the IV frames generated by your seed).
I usually just hatch the egg though, because I like wasting time, and it's so suspenseful!
Play the slots and Profit!
If you did everything right (Including hitting your seed), your Pokemon should have the IV spread for which you were looking. It probably has the wrong ability or nature or something, because the game doesn't like you. In this case, you can either try to control it with PIDRNG (but I doubt you would, since you wouldn't use this method if you were adept at PIDRNG), or you can just try again, flailing randomly before picking up your egg. Statistically, you should only need to hatch 4 eggs for a specific nature + ability on a 2-ability Pokemon.
Don't worry, we'll get there eventually.
Anyway, this is kind of the Windows Vista method of doing this, as it's slow, clunky, kind of annoying, and certain features or goals we want are hard to utilize or require selling your soul to acheive. Luckily, we can tweak this method into something more streamlined.
: A little more control