"If that brain can't figure out the secret of the serum, then add more brains."
To combine with that is Dragon Spirit of White, which is treated as a normal monster in the graveyard
Charizard VSTAR has
But if I didnt know where to look, I might have to do, maybe, four times as many scans, even within a small area. Put another way, randomized cards likely wouldnt keep anyone from ultimately figuring out what rare card was inside of a pack, but it would heavily slow down anyone attempting to do this at the scale of scanning endless amounts of newly released cases
This makes them high-risk, high-reward because the benefits they offer are balanced by the idea that your opponent gains more from bringing them down
"If it is not a Psychic Pokmon, put it on the bottom of your deck." Card draw effects are incredibly important in card games as they essentially reduce the random chance element and allow players to pull exactly which cards they need to execute winning combos