Look for: The WOTC logo on the bottom of the card (a small wizard's hat shape) Set symbols from Base Set, Jungle, Fossil, Team Rocket, Gym Heroes/Challenge, Neo Genesis/Discovery/Revelation/Destiny The original card backs (slightly different shade and texture than modern cards) First edition stamps (a small "1" in a circle on the left side of the card) Shadowless cards from Base Set (no shadow around the artwork frame, lighter colored on the right edge of the image box) Visible holos
Like most Magic: The Gathering cards, the value of Winter, Misanthropic Guide depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Duskmourn: House of Horror)
Its also just stronger, because Yoshimarus a better card than Alharu
WHERE TO BUY
If one of these Forests is turned face up, the effect making it a Forest land will expire