Beginning this Saturday, players who connect to Nintendo Wi-Fi Connection on their Pokémon HeartGold and SoulSilver versions will receive the Enigma Stone. What is the Enigma Stone you say? It will allow trainers to catch either Latias or Latios, depending on which is unavailable on the given version. The legendary Pokémon will come like the other half of the pair at Level 40.
In exchange for the Enigma Stone, players will also get the hold item, Soul Dew. When held, Soul Dew powers up the Special Attack and Special Defense of Latias and Latios. Please note: In order to obtain either Latias or Latios, players must have beaten the Elite Four, claimed the National Pokédex, and have two or fewer Wonder Cards. Lastly, the chance to capture this the legendary Pokémon ends August 27, 2010.