Cheapest priced copy (Fallen Empires): $0.35 at Card Kingdom, near mint, their price list as of .
Night Soil 
Enchantment · Common · Fallen Empires · #71a
{1}, Exile two creature cards from a single graveyard: Create a 1/1 green Saproling creature token.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
5 printings · $0.35 to $0.59 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2013 | 158 | Common | $0.59 | — |
| Fallen Empires | 71a | Common | $0.35 | — |
| Fallen Empires | 71b | Common | $0.35 | — |
| Fallen Empires | 71c | Common | $0.35 | — |
| The List | C13-158 | Common | $0.49 | — |
One ruling from Wizards of the Coast
- 1 October 2008The two creature cards are exiled as a cost. No one can respond to this. If no graveyard has two creature cards in it, the cost can’t be paid.