Right then here is what you have to do:

Get 6 golurks the same level, make sure at least 3 knows toxic. The move set to beat them are Toxic, Bolt Strike, Blizzard, Hydro Pump (for atleast 3 Golurks). The other 3 Golurks have Blue Flare, Bolt Strike, Blizzard, Hydro Pump.

To Beat Zapdos:
Use Toxic then use Blizzard, till Golurk or Zapdos Faints. (If Golurk dies use a Golurk without Toxic)

To Beat Moltres:
If your 1st Golurk has hp left hit Moltres with Toxic, if he is still alive use Hydro Pump or Bolt Strike. Do the same as Zapdos if Golurk dies.

To Beat Articuno:
Now you should have atleast 4 Golurks and 2 with Toxic. Get one of them that as Toxic and hit Articuno, then if your lucky he didn't hit you and use Bolt Strike or Blue Flare. If Golurk dies with Articuno just use any Golurk that is left.

Good luck hopefully you beat Zapmolcuno

Dude i do it a different way. i have my first golurk use toxic then switch him out then keep attacking the others till zap dies then toxic on moltres then switch then toxic on arti. i beat zapmolcuno like 20 times in 20 minutes

So you telling me it took you a minute to beat Zapdos, Moltres and Articuno. LOL. Why post on here If you can already do it, this is for people who can't do it. But your way is just luck as Articuno as a 75% chance hitting you. So if you have 6 Golurks all the same level and at least 3 with Toxic. You have a higher chance winning. But there is no way you have beat Zapmolcuno 20 times in 20 minutes.

All you need is to hit it with toxic once. dont have to be mean about it

How am I being mean about it?

He wasnt being mean, hes trying to explain it to you

not best bangs for your coins/$ because one toxic TM cost a whooping $75,000,000 & 4,500 coins! Not only you needs one but three toxic TMs which adds up to a whooping $225,000,000 & 13,500 coins! So not worth the time and cost. Goes do something that actually worth investing 13,500 coins and $225,000,000.

Wouldn't Stone Edge or Rock Wrecker be more efficient? I don't know much about the Battle mechanics here but 4x seems a lot better than 2x. This would only work on Articuno and Moltres though.

@ Antichrist. Iv tried the rock moves on zappy, Blizzard was better.

@ Bomkl. Its costly but damn don't you get loads of exp from Articuno. So not just for fly your also getting a lot of exp.

Its alot easier to train, i get 3 mil from swimmer richard, but i get 24 mill from zappy, 31 mill from moltres and almost 40 mill from articuno. Its worth it.

but how long did it takes to beat those pokemons because swimmer's only takes 5 seconds to beats I bet it a lot longer since you have to use more than one pokemons taking loading time

Like I said, it'd only work on Moltres and Articuno since they're 4x weak to Rock type moves.

Bomkl: i beat zapdos in about 10-15 seconds easily, even faster for the other two

cool I guess it worth a while

when you win, can you only get fly once?