The cost of a card is more than just its mana cost, although that is typically a big part of it
Another thing to focus on is sealed products and graded cards
PRODUCT HIGHLIGHTS Contains 10 cards per pack Company: Pokemon USA Brand: Pokemon Item Type: Booster Pack UPC: 820650104206 Stock #: 238298 Our Guarantees to You, Our Valued Customer
If you can think of a noob mistake that a little kid could make (running 60 card decks, prioritizing Life Points too heavily, or running cards that are too hard to use), then the chances are I've probably done that when I was that young
Murders at Karlov Manor (MKM) #70 Illustrated by Daarken Magic: The Gathering, MTG Company: Wizards of the Coast Brand: Magic The Gathering Series: Murders at Karlov Manor Release Date: February 9, 2024 Item Type: Single Card UPC: 0611816098275 Stock #: 468737 Our Guarantees to You, Our Valued Customer
A little extra is that if you're able to mass-produce monsters onto your field, you can sacrifice this card to wipe out as many monsters your opponents own up to the amount you control
