You use a deck of 100 cards led by a legendary creature, your Commander
A Pokmon card is valuable based on several factors, including its age, eligibility, what set it was released in, the physical quality or condition of the card, the rarity and desirability, and the Pokmon/character/item that is featured on the card
And if you are playing singleton, all you need is to replicate it like with Altered Ego, Clone, etc
Footseps and Response have their niche in Modern, while Ancient Ziggurat has a huge casual appeal and is an uncommon with only one nonfoil printing
OP10 Royal Blood includes around 126+ cards, featuring multiple rarities such as SEC, L SEC, SP, and highly sought-after Alternate Arts
Hearthstone The actual price of building a Hearthstone deck is confusing and complicated thanks to the fact that you can't simply buy a Hearthstone deck