Even though the deck I used was a smaller version of the planned Mickey Mouse/Moana starter deck with just 40 cards, instead of the standard 60 there were multiple copies of cards that never felt like they could radically change the course of a game
The right exact dimensions and standard dimensions help your Pokmon cards fit perfectly inside sleeves, protective sleeves, binders, and binder pages, giving better protection during storage and daily use
It's hard to tell if this one's worth it, as the monetary value for this drop will depend entirely on how popular those new cards are - the rest are worth a pittance
Beyond that, I'm not sure exactly what deck wants this, because I think it's a bit much for what something like Kuldotha Red would be interested in, but the flexibility is worthwhile alone
Keep in mind that Magikarp will be benched for the entire duration until it evolves