TO get Giratina Palkia and Dialga in pokemon Heart gold and Soul silver

If you bring over the special Arceus given away for the 12th movie, you will unlock Dialga, Palkia or Giratina. This is done by going to the Sinjoh Ruins, hidden somewhere in Johto with Arceus on your team. You will encounter Cynthia who will tell you that Arceus has the ability of creating certain Pokémon. These Pokémon are Dialga, Palkia & Giratina. You have a choice of the Pokémon you can create but you can only create one so choose wisely. However, in addition to that, you can do this event twice. Once with the event Arceus and once with an Arceus obtained at the Hall of Origin in Sinnoh. They are at Level 1 and are holding their respective orbs so you won't have to worry about their strengths.

BY : Celvin