Cheapest priced copy (Journey into Nyx): $0.35 at Card Kingdom, near mint, their price list as of .
Nessian Game Warden 
Creature — Beast · 4/5 · Uncommon · Journey into Nyx · #132
When this creature enters, look at the top X cards of your library, where X is the number of Forests you control. You may reveal a creature card from among them and put it into your hand. Put the rest on the bottom of your library in any order.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Journey into Nyx | 132 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 26 April 2014The value of X is calculated as the ability resolves.