If you go to the Weather Institute after you beat the Main Story and talk to the man of the second floor, he'll either say something about a drought or a heavy rain on a certain route. Go to said route and look for a cave that usually isn't there. There you will find the corresponding Pokemon with the weather condition, so either Groudon or Kyogre.
cave of oregan in sootopus
where can i find groudan in Pokemon emerald
You can't get one in Platinum at all. You'd have to transfer one from Ruby, Sapphire, or Emerald.
you cant get reggiggas in Pokemon emerald
there is no mist stone in Pokemon emerald
You cannot find an infernape in Pokemon emerald for that Pokemon you need Pokemon platinum, pearl or diamond.
You can't find a Dawnstone in Pokemon Emerald
catch it, trde it, or use action replay depending on Pokemon game
he is the champion in emerald
You cannot get Rhyperior in Pokemon emerald as he is only in Pokemon diamond and pearl.
Can get one, in emerald its a fourth gen pokemon.
After you beat the elite 4 you are able to go to the Battle Frontier which is where you fight to win battle points, cymbols and berrys. you can also get groudon and kiogre.1: talk to a guy in the place where they give you castform.2: he says there is unusual rain or sun. go there and look around.3: find them and catch them.hint: kiogre is behind the town with the rocket place. you need dive to get to kiogre.