Hi, I'm fairly new to PRNG in HGGS. How would I go about trying to RNG a Shiny Cyndaquil as my starter with Rash (or any workable) nature?
General procedure:
1) Find a decent Rash spread that is on frame 5 (and only frame 5). I recommend using RNG Reporter's Time Finder (link in sig) to search for all Rash spreads that are on frame 5 (not 1, 2, 3, or 4, though those will be in the search results). There will be thousands, so try limiting it to ones with good IVs (like 25+ in each stat). Have the search look for minimum delay be 495, max delay 999.
2) Look at the PID of the spread you like, then put that in Pandora's Box (also now included in RNG Reporter) to find an ID\SID that will make it shiny. Start a new game, at the exact moment necessary (correct date\time\delay) for your game to have that ID\SID.
3) Go to Elm's lab, save. Restart the game at the exact moment for you to get the seed for your spread - it's listed in the results as well.
4) Collect your shiny Cyndaquil!
This is just a very general procedure, you're going to have to ask others or preferably read the tutorials to figure out how to hit your seed. We previously just dismissed RNGing for a starter to be too difficult to do without save states, but this method is a hell of a lot easier. I'm too busy to help people with the details most of the time, I just figure out how to make difficult stuff easier.