I guess it's biting them
All songs from the original deck were kept, with 4 copies of the common and uncommon ones, and 2 copies of the rare, Fantastical and Magical
I personally recommend running 3-5 of these but especially Ohran.
If your opponent happens to have coulrophobia, this could mean you win on the spot
As an example, Emchompite says that cards that were included within Japanese sets, like the Secret Rare Yveltal EX from Best of XY, but as promos in English, are usually more expensive in Japanese just due to the nature of their release (i.e., having to pull the card from a pack vs a guaranteed promo card in a product)
Shinies were a massive reason why Hidden Fates was such a huge set back in the day, and Im glad they brought them back in Scarlet & Violet with Paldean Fates