Gift from the beginning of the game.
and thank you for responding so quickly.
as long as you know your parameters.. we can start after that.
go to rng reporter, click on time finder,
method 5 [standard seed], and gift pokemon.. choose the nature you want, and pick a IV spread you're looking for. nothing TOO specific, as you'll want a good search result.
at the top left you'll see year, month, min frame/max frame
set them up. and btw.. as it's your first pokemon.. min/max frame WILL HAVE to be 1. so put that as min and max. since you don't have any other pokemon with you, and no other option to move frames like that.
go ahead and generate your results.. see what you get.
once you find a result you like, date/time/iv spread/ whatever.. copy the 'full seed' and paste it into the Seed (Hex) slot.
now on this page, you need to go to method 5 PIDRNG, gift pokemon.
check the "shiny only" box, and click the "calculate initial PIDRNG Frame"
once that's done.. go ahead and generate your results.
if all is good, you'll see the frame you need to hit.
and how do you do that? well since it's your 1st pokemon to get, starter, gift, etc.. you need to do this.
Check what the frame number is [ex: 150] and then see your 'Starting Frame' [ex: 42].
all you do is 150 - 42 = 108 = 108 times you have to save infront of the giftbox until you open it and pick your pokemon.
aka.. the shiny beast you just found.