Cheapest priced copy (Oath of the Gatewatch): $0.35 at Card Kingdom, near mint, their price list as of .
Walker of the Wastes 
Creature — Eldrazi · 4/4 · Uncommon · Oath of the Gatewatch · #10
({C} represents colorless mana.)
Trample
This creature gets +1/+1 for each land you control named Wastes.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Oath of the Gatewatch | 10 | Uncommon | $0.35 | $1.99 |
One ruling from Wizards of the Coast
- 22 January 2016The last ability applies only if Walker of the Wastes is on the battlefield.