This event has been made available with the code 1STPTCCHAMP, announced during the Korean Pokémon Trainers Cup stream. The Pokémon is based on the Jeong Sang-yoon's Porygon-Z.
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.2.1.2-0, Post Updated Date:20210821_1155