When this item is received as an event and delivered by the deliveryman at the Poké Mart, the player will find Professor Oak waiting for them on their next visit to Route 224, at the northernmost, barren end of the route. He will explain to the player that the white rock there is present for a person to note what they are most thankful for, and upon inspection of it, the player will be able to enter their own note (via the same text input system as is used for Pokémon nicknames). After this has been done, the Seabreak Path will appear, and a Shaymin will come down from it before returning north to the Flower Paradise, where it can be caught at level 30.
For more info on how to get Shaymin, visit the official Pokémon website. Be sure to save your game after you pick up Oak's Letter at a Poké Mart.
French
*Carte Miracle
La Lettre Chen!
Rendez-vous sur le site Pokémon officiel pour savoir comment obtenir SHAYMIN. Allez tout d'abord récupérer la Lettre Chen dans une Boutique Pokémon, puis pensez à sauvegarder.
German
*Wunderkarte
Eichs Brief ist eingetroffen!
Auf www.pokemon-platin.de erfährst du wie du dir SHAYMIN holen kannst. Vergiss nicht, deinen Spielstand zu sichern, nachdem du Eichs Brief im Pokémon-Supermarkt abgeholt hast.
Italian
*Scheda Segreta
Ecco la Lettera Oak!
Visita www.pokemon-platino.it per ulteriori informazioni su come ottenere SHAYMIN. Ricorda di salvare il gioco dopo aver ritirato la Lettera Oak in un Pokémon-Market.
Spanish
*Tarj. misteriosta
¡La Carta del Profesor Oak!
Para saber cómo obtener a SHAYMIN, visita la página oficial de Pokémon. Asegúrate de guardar la partida cuando consigas la Carta del Profesor Oak en la Tienda Pokémon.
Distribution in Brilliant Diamond and Shining Pearl
Even though the Shaymin residing at the Flower Paradise is caught from the wild, its status screen will always display it as having been met in a fateful encounter.
This is likely because only fateful encounter Shaymin can become Sky Forme and allow the player to receive the Gracidea in the first place.
Although Oak's Letter is present in the game data for Pokémon Diamond and Pearl, the item was never distributed for those games by Nintendo.
A Shaymin could be caught in those games by acquiring Oak's Letter via cheating and glitches, but, due to the fact that Pokémon Diamond and Pearl does not apply the fateful encounter flag, it would never be able to achieve its Sky Forme.
Despite Oak's Letter only being distributed for Pokémon Platinum, the Wonder Card for the Pokémon 20th Anniversary Shaymin states that, "With a special letter, Shaymin could first be encountered in the Flower Paradise of Pokémon Diamond and Pokémon Pearl."
Marley will speak to the player differently with the Oak's Letter event activated.
