A special serial code will be distributed next month for Pokémon Ultra Sun and Ultra Moon via CoroCoro in Japan. It will be made available from January 15, 2018, and allows players to add the Legendary and powerful Pokémon Arceus to their team. Arceus is a rare Pokémon in that it can’t be obtained through normal play. To learn more about this upcoming distribution event, click here.
Source: Official Pokémon website
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