Preservation: Grading encapsulates the card in a protective case (slab), which helps prevent physical damage, wear, and tear
For the price of six random face-down Extra Deck cards, it grants an immediate +1 in hand advantage
Butterfree Mega Sceptile ex Using only Grass energy, Caterpie's ability can let it evolve itself into Metapod as long as it survives your opponent's turn which is helpful if going first
With that said, there is an in-game currency called Pack Hourglass that helps reduce the refresh time of your next booster pack, which can be attained through normal play
The Blue-Eyes Spirit Dragon, in particular, was a mighty synchro monster that could control the state of the board
Ash's Pikachu #SM109 (Pokemon Promo | Pokemon Cards) prices are based on the historic sales