Arceus cannot currently be obtained in Pokémon Brilliant Diamond and Shining Pearl, but it could become available in a future update. Arceus' arrival to BDSP could occur as part of a tie-in with the upcoming Pokémon Legends: Arceus, or a new event could be added to let players capture the Pokémon god. Saving Arceus' inclusion for a special occasion would explain why BDSP does not contain the legendary Pokémon at launch.
Arceus being unobtainable in BDSP mirrors its initial absence from the
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