Rarity and finish: holo, reverse holo, full art, illustration rare, and ex or V cards pull far more than plain commons from the same set
The real showstoppers, though, are the immersive cards which are well, they're pretty sick
Shinedust is used to obtain Flair for cards, but it has also been established that it will be folded into trading as a mechanic in a future update, replacing the Trade Tokens (which will be phased out)
Tech Against Counters: Include 1-2 cards like Path to the Peak to shut down abilities
I certainly don't think that helped
We've already seen some of the classic cards that will be reprinted for the celebration, and yesterday the Pokmon company revealed two new exs that will feature in the expansion, both of which are Pikachus