Cheapest priced copy (Worldwake): $2.99 at Card Kingdom, near mint, their price list as of .
Walking Atlas 
Artifact Creature — Construct · 1/1 · Common · Worldwake · #131
{T}: You may put a land card from your hand onto the battlefield.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $2.99 to $24.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Worldwake | 131 | Common | $2.99 | $24.99 |
2 rulings from Wizards of the Coast
- 1 March 2010The word “artifact” was inadvertently omitted from Walking Atlas’s type line. The card has received errata to correct this omission; it is an artifact creature.
- 1 March 2010Putting a land onto the battlefield as a result of Walking Atlas’s ability isn’t the same as playing a land. You may do put a land onto the battlefield even if it’s an opponent’s turn or you’ve played a land this turn. Similarly, putting a land onto the battlefield during your turn doesn’t preclude you from playing a land later in that turn.