>>38855109anywhere, dragonites are rare spawns anywhere you can fly through if you ask me, i don't recommend doing that, I say go for dratini by the power plant through I should warn you, to ensure maximum perperation you'll need
>At least over 100 Ultra Balls, Razz Berries especially golden ones, found in Celrulian Caven floor 2's sparkly areas >Over 100 of that berry shaped like bananas to keep it from jumping around too muchsure you could get lucky but who wants to rely on luck when you're trying to capture a shiny in let's go where they can run? once you get all that stuff you can start your chain don't stop at 31, keep going until you hit 100 captures as once you hit that milestone the capture rate for dratini will lower so that the ring will be green for ultra balls meaning that with a great or excellent throw along with a golden berry by the time you find the shiny dratini it's highly likely you'll capture it on the first throw.
Also, right before you start go to miss celadon and make sure to change your nature to one sutiable since nobody wants a shiny with a dog shit nature, it cost 10,000 if you haven't used her already and it lasts for the entire day in real life hours so if it takes more than one day you'll have to break off your search to go back to her and do it again.
Good luck and happy hunting anon, just know that once you do catch it, you'll still have a chain going so you can move on to another pokemon you want right after, throw I suspect you'll be tired as hell
Side note, if you haven't caught the staionaries already, ms. celedon's nature change works for them,too as does Lures so you can save in front of them and keep trying without having to spray new lures but you will have to break it off to pay the old lady again once the day is up