Only cards up to the Art Rare level, including diamond and 1-star cards, will be tradable at launch, with rarer cards like EX and gold cards excluded for now
These arent the strictest archetypes Ive seen, so think of them more as guidelines than any sort of hard rule
How many packs would you have to open in order to find 2 packs containing a shiny Charizard
Surfing Pikachu One of the most iconic Pokmon and Pokmon cards of all time On a completely different end of the spectrum, the Surfing Pikachu card from the X/Y: Evolutions set became popular not because of its skillset or competitive prowess but because, well, its a round Pikachu on a surfboard
With Super Rare cards, you can expect one in every two packs you open
Sealed product often shows steadier price action than singles, so being able to manage both in one place is genuinely useful for both long-term holds and short-term flips