Every turn you have a possibility of losing a life and drawing a card, and later in the game you can punish them really hard for not having cards in hand at all
in the DSOD Ta Event and DSOD Ta Level-Up Rewards, the decks competitive builds have primarily shifted to versions featuring the Lightsworn engine, which have seen competitive success in several tourneys
Japan will have to target the websites that are selling them, to stymie the distribution but it wont stop them, it will just be like pirating streams, they just switch to different websites,
It even has some nice reprints which means it might actually be worth buying for a long time
For example, if you combine it with Guide of Souls, you can make sure you get an energy back every time a creature enters the battlefield
When looking at Pip-Boy 3000, its entirely unsurprising this is happening thanks to the cards fantastic utility