Nintendo is giving away the legendry Pokémon Arceus to Pokémon Diamond, Pearl and Platinum users from today.

Across Australia—well, certain EB Games and Kmart stores—from today you can pick up the Arceus legendary Pokemon. All you will need is your DS and a copy of either Pokémon Diamond, Pearl or Platinum, the Pokedex, and to make sure you have no more than two wonder cards.

Arceus Information
Poké Ball: Cherish Ball Held Item: Rowap Berry
Moves: Judgment, Roar of Time, Spacial Rend, Shadow Force
With the ability to change its type, Arceus can be a very powerful Pokémon in whatever way suits the player. What’s more, Arceus holds a secret that will be revealed in the upcoming Pokémon™ HeartGold Version and Pokémon™ SoulSilver Version games! When you trade Arceus into one of those games, you’ll be able to catch Dialga, Palkia, or Giratina (you’ll have to choose just one!) and the Pokémon you catch will be at level one!

Nintendo has set up a site with more information on how exactly to get Arceus and what stores across Australia have him/her/it. Check that out here.