Cheapest priced copy (Onslaught): $0.69 at Card Kingdom, near mint, their price list as of .
Elvish Guidance 
Enchantment — Aura · Common · Onslaught · #255
Enchant land
Whenever enchanted land is tapped for mana, its controller adds an additional {G} for each Elf on the battlefield.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
1 printing · $0.69 to $13.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Onslaught | 255 | Common | $0.69 | $13.99 |