how many booster boxes come in a case Pokémon TCG: Sword & Shield Battle Styles Box (Case of 6 Iron Boulder First booster box case :

After this card's activation, it remains on the field, but destroy it during your opponent's 3rd End Phase

The Great Demon Lord can decimate decks that like to play multiple Digimon with its deletion effects, but it can also take advantage of your opponents trash by playing out their Digimon to activate Leviamons effects

Levia-Dragon - Daedalus X WATER Level 7 [ Sea Serpent / Effect ] ATK 2600 DEF 1500 You can send 1 face-up "Umi" you control to the GY

(6/6/2025) If a permanent has in its mana cost, X is 0 for the purpose of determining its mana value.

That would heavily skew gameplay and immersion as well

The card is the crown jewel of your collection for another few years