Those who have managed to hold onto copies with limited wear and tear, could cash them in now for a huge return, particularly if they happen to own some of these rarer cards
This will likely remain the case going forward as well, unless an even more lucrative classification of card comes to the Pokmon TCG when the Scarlet and Violet sets release
So discarding a split card counts as discarding a single card, and a split card in your graveyard counts as a single card with the types of both halves(for the purposes of something like Delve)
Promo Info BOOSTER WORLD CONVERGENCE [BT-21] CLOSECLOSE BT21-089 SR Tamer Parallel Rare Takato Matsuki Color Purple Red Form - Attribute - Type Hero DP - Cost 3 Digivolve Cost 1 - Digivolve Cost 2 - Upper Text [Start of Your Main Phase] If your opponent has a Digimon, gain 1 memory
As you can see, in the main deck there are 45 cards
Fusion Summon 1 Fusion Monster from your Extra Deck using monsters on either field, including this card, but you cannot use other monsters you control as material