This event has been made available with the code ER1CSGASTR0D0N, announced during the 2022 North America International Championships stream. The Pokémon is based on the EUIC 2022 winner, Eric Rios' Gastrodon.
As of LGPE, wonder cards are no longer stored in saves. As such, players will not be able to inject this event into their save using PKHeX.
Format Ver.2.1.2-12, Post Updated Date:20220624_1439