The goal is simple, to make your deck truly random so that no player has any information about the order of the cards
You can read my article on how to display these unique cards here
However, the Vanish keyword makes him vulnerable to actions, while giving you options to bait your opponent into wasting powerful action cards
And for the rest of the less rare ones, you can make another listing where you sell them either in bulk or individually
Among some of the new Space-Time Smackdown cards, here's everything you'll need to form a meta Darkrai ex with Greninja in Pokmon TCG Pocket: Having a Druddigon in your deck is better than other bulky stall Pokmon cards like Kangaskhan, as they help go against Grass-types who exploit the only weakness of Darkrai ex
On arrival this fetches an equipment and puts it your hand, so that's always card equilibrium