first, you have to get both Groudon and Kyogre in your party. then, go professor oak and he will give you an orb. go to the embedded tower in the ruins off of Cianwood. Raquaza should be there. ps. Raquaza won't be there if you traded Kyogre or Groudon from Ruby or Sapphire. they have to be from Soulsilver or Heartgold.
You cant get it on that game you have to go and get it from another game and trade it on to your current game.
At the sky pillar by pacificlog town
well the strongest Pokemon you can catch is raqazza a legendary dragon Pokemon
You can't go to Hoenn in Pokemon HeartGold. You can only go to Kanto.
you have to go the sky pillar
I could trade you one if you trade me something good also?
You can only go to Johto and Kanto in Pokemon Heartgold and Soulsilver
Yes.
no
In the Pokeathelon
NO
No