Also, if you want an example, I can actually give you one
Sacrifice after III.) I - The Ring tempts you, then each player mills cards equal to your Ring-bearer's power.II - Destroy all nonlegendary creatures.III - Each opponent loses 1 life for each creature card in that player's graveyard
Each of the three starters from Kanto, Bulbasaur, Charmander and Squirtle, plus their evolutions, have some great cards, but they're far from the best
Finding out which cards are the most valuable also tells you which cards are most important, and discovering what makes those cards worth their asking price is an easy way to understand which concepts are powerful and universal to the game of Magic
Acornelia, Fashionable Filcher, Alexander Clamilton, Pippa, Duchess of Dice, Stet, Draconic Proofreader, and Syr Cadian, Knight Owl (this is the only one that makes me chuckle)
Of course, this being a stage 2 pokemon with low attack value and HP (130) is what made Crobat stay out of our tier-list