Get statues of three Sinnoh starter Pokémon for your Secret Base in Pokémon Brilliant Diamond and Shining Pearl
How to receive the Pokémon Statue via Mystery Gift:
1. Launch Pokémon Brilliant Diamond or Pokémon Shining Pearl from the Nintendo Switch HOME Menu.
2. Press the X button during gameplay to access the in-game menu.
3. Select MYSTERY GIFT.
4. Select Get with Code/Password.
5. Press A to confirm.
6. Enter code BDSPUNDERGR0UND and select OK.
7. Select Pokémon Statue Gift.
8. Be sure to save your game after receiving your gift.