The Pokémon Company and Nintendo have announced a new distribution event for Pokémon Scarlet and Violet. Fans who participate in a demo Tera Raid Battle at Jump Festa in Japan this weekend will receive a special serial code to get a Ground Tera Type Gyarados in Pokémon Scarlet and Violet. This distribution is currently announced exclusively for Japan, but be sure to stay tuned for any official updates from The Pokémon Company or Nintendo.
Source: The Pokémon Company and Nintendo
Pokémon Blog 
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