A code card for a Shiny Poipole that can evolve into Naganadel as soon as it levels up is being distributed at participating GameStop locations from September 17, 2018 until October 7, 2018 in the United States.

United Kingdom: Smyths from September 17th, 2018 until October 15th, 2018
Europe: September 2018 Trainer Club Newsletter

Pick Up a Pearly Poipole at GameStop

For a limited time, you can get a code at your local GameStop store to add a Shiny Poipole to your game.

Most of the Trainers who encountered the Ultra Beast Poipole in Pokémon Ultra Sun and Pokémon Ultra Moon found it as its usual violet color. Starting on September 17, you can get your hands on a Shiny Poipole, whose radiant white hue will surely stand out in your Pokémon collection.

From September 17 to October 7, when you visit your local participating GameStop store you can get a code that will let you receive a Shiny Poipole in your game. This special Poipole will already know the move Dragon Pulse, meaning it can evolve into Naganadel as soon as it levels up. Poipole knows several other crafty moves, too, including Venom Drench and Nasty Plot, making it ready for battle against your friends.

Code cards will be available at GameStop only between September 17 and October 7, so don't miss your chance to add the brilliant Shiny Poipole to your game!

Shiny Poipole

Lv. 40
Ability: Beast Boost
Moves:
Venom Drench
Nasty Plot
Poison Jab
Dragon Pulse

Use these steps, along with your code, to get Shiny Poipole.

1. Open your Pokémon Ultra Sun or Pokémon Ultra Moon game.
2. Select Mystery Gift on the main menu.
3. Select Receive Gift.
4. Select Get with Code/Password, then Yes, then Yes again to connect to the internet.
5. Enter your code.
6. Watch as Shiny Poipole arrives in your game.
7. Speak to the delivery person in any Pokémon Center to receive your Shiny Poipole.
8. Be sure to save your game!

Source: https://www.pokemon.com/us/pokemon-news/pick-up-a-pearly-poipole-at-gamestop/

Get Shiny Poipole at GameStop!

Visit participating GameStop stores to add Poipole to your Pokémon Ultra Sun or Pokémon Ultra Moon game! What’s more, this Shiny Poipole will be a brilliant white color instead of the usual purple. It will also know the move Dragon Pulse, meaning it can evolve into Naganadel as soon as it levels up. You can get Poipole by picking up a code card at your local GameStop between September 17 and October 7, so don't miss your chance!

Available September 17–October 7, 2018

Source: https://drm.pokemontcg.com/en-us/?cid=tw:social:drm:poipoledistro&utm_source=tw&utm_medium=social&utm_campaign=drm&utm_term=poipoledistro#distribution

YouTube Trailer - Celebrate Dragon Pokémon with This Special TCG Expansion!

Source: https://www.youtube.com/watch?v=jglmQQeK5SA