Cheapest priced copy (Worldwake): $0.79 at Card Kingdom, near mint, their price list as of .
Ruin Ghost 
Creature — Spirit · 1/1 · Uncommon · Worldwake · #19
{W}, {T}: Exile target land you control, then return it to the battlefield under your control.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.79 to $4.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Worldwake | 19 | Uncommon | $0.79 | $4.99 |
3 rulings from Wizards of the Coast
- 1 March 2010The returned land behaves like any other land that's put onto the battlefield. If it has an ability that says it enters tapped, it does so. (Otherwise it enters untapped.) If it has an "enters" triggered ability, that ability triggers.
- 1 March 2010As Ruin Ghost's ability resolves, the targeted land is exiled, then immediately returned to the battlefield. The land that enters is a different permanent from the one that left. Any counters, Auras, and so on that were affecting the old land won't affect the new one. Any spells or abilities that were targeting the old land don't target the new one. Whether the old land was tapped or untapped has no bearing on the new one.
- 1 March 2010The land returns under your control, regardless of who owns it.