Cheapest priced copy (Tenth Edition): $0.35 at Card Kingdom, near mint, their price list as of .
Ghost Warden 
Creature — Spirit · 1/1 · Common · Guildpact · #5
{T}: Target creature gets +1/+1 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 |
|---|---|---|---|---|
| Tenth Edition | 16 | Common | $0.35 | $0.49 |
| Guildpact | 5 | Common | $0.35 | $0.49 |