In order to take part in the event, you'll have to have beaten the Elite Four and received the National Pokédex. Then, you'll have to connect to the Nintendo Wi-Fi Connection between July 31 and August 27 and fight a Pokémon holding an Enigma Stone. This will indirectly lead to an encounter with Latios (in HeartGold) or Latias (in SoulSilver) -- all in a day's work in the endless pursuit of 'em all.
[Press release is posted after the break.]
AND CATCH LEGENDARY POKÉMON!
Pokémon and Nintendo Offer Limited Wi-Fi Distribution
For Chance to Catch Elusive Pokémon
July 28, 2010-Pokémon™ Trainers get ready to unlock the secrets of the Enigma Stone as The Pokémon Company International and Nintendo of America Inc. introduce a limited distribution via the Nintendo® Wi-Fi Connection service. Beginning this Saturday, July 31, through Friday, August 27, players of Pokémon HeartGold and Pokémon SoulSilver Versions who have wireless broadband Internet access can receive the Enigma Stone for a chance to catch the amazing, yet elusive, Legendary Pokémon Latias™ or Latios™.
Similar to the other half of the Legendary pair that can be caught normally during gameplay, the Pokémon encountered with the Enigma Stone will be at Level 40. In exchange for the Enigma Stone, Pokémon fans will also get the Soul Dew, a held item that powers up the Special Attack and Special Defense of Latios and Latias. Only Pokémon players who have beaten the Elite Four, claimed the National Pokédex, and have two or fewer Wonder Cards can solve the riddle of the Enigma Stone to capture Latios for Pokémon HeartGold Version or Latias for Pokémon SoulSilver Version.
This special distribution event is only available for a limited time. For more information, players should visit www.pokemon.com