Instructions
Turn on your console and load "Pokémon SoulSilver." Scroll down to "Mystery Gift" on the main menu and select it.
Select "Receive Gift" option and then "Get Via Nintendo WFC." Select "Yes" to confirm the action.
Wait while the game searches for a gift. Select the "Yes" option when it appears to download the event to your game.
Return to the main menu and select "Continue" to enter the game.
Go to a Poké Mart, found in most major towns in Kanto and Johto. Talk to the delivery man next to the counter to receive the event item.