Decks are condensed from 60 to 20 cards, and instead of drawing energy cards, players can automatically equip one energy counter per turn
While this card isnt anything extravagant or bombastic, it captures the moment superbly and is full of little moments of charm, such as Gengar being half submerged in the floor
Most of that stuff is just copyright info, but the information to the right of that line is what is known as the collector number, and it tells you where the card falls in the set, should you wish to organize your collection in that fashion
The low prices on Theros Collector Booster boxes compared to Throne of Eldraine is simply a reflection of Theross relatively low power level
What the numbers actually mean For a PSA 10 (Gem Mint) , you need centering of 55/45 or better on the front and 75/25 or better on the back