Today, trainers will be able to obtain special codes to get Shiny Zacian and Shiny Zacian in their Pokémon Sword and Pokémon Shield games. The code is available from the GAME store in the UK and the GameStop store in Ireland between October 22nd and November 18th. These codes can be obtained for free, while stocks last (no purchase required).
When the Pokémon Sword and Pokémon Shield games were first released, Zacian and Zamazenta were introduced as legendary Pokémon. In the crown sword form, Zaxian is a fairy and steel Pokémon with a sword in his mouth and attacking gracefully, while in the crown shield form, Zamacenta is a combat and steel Pokémon with Shield covered body and imperial movement.
Pokémon Sword and Pokémon Shield are the core Pokémon video games, both of which can be used on the Nintendo Switch system.
Source: The Pokemon Company