Cheapest priced copy (Lorwyn): $0.35 at Card Kingdom, near mint, their price list as of .
Facevaulter 
Creature — Goblin Warrior · 1/1 · Common · Lorwyn · #111
{B}, Sacrifice a Goblin: This creature gets +2/+2 until end of turn.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Lorwyn | 111 | Common | $0.35 | $0.49 |
| Modern Masters | 85 | Common | $0.35 | $0.49 |