For a flavorful explanation of this, we came up with a time travel story
Simply start typing your favorite pokemon monsters name or id in the search box
No card today would use an effect like this
Reclamation SageReclamation Sage (61,609 Inclusions, 22% of 276,897 Decks) Unlike its lesser cousin of a staple, Loaming ShamanLoaming Shaman, Reclamation SageReclamation Sage was given the "uncommon replacement that plays better in some decksuncommon replacement that plays better in some decks" treatment rather than the "mythic replacement that actually replaces all instances of said card provided you have the $20 bill to buy itmythic replacement that actually replaces all instances of said card provided you have the $20 bill to buy it" treatment, so luckily this retro frame hasn't been immediately rendered worthless
We hope this list would have ignited that fire in you, which will get you into collecting Pokemon cards because who knows, you might pull a card that can be worth thousands of dollars
How useful bulk will be for you depends on what type of player you are and the reason for your purchase