The Pokémon TCG: Scarlet & Violet—Obsidian Flames Elite Trainer ... You will also find a code card for Pokémon Trading Card Game Live.
Pokemon TCG Pocket has a secret Gholdengo emblem, but it will take some serious grinding if you want to unlock it.
More Pokemon that originally appeared in Scarlet & Violet are headed to Pokemon Go in an upcoming event, but getting them won't be so simple.