Cheapest priced copy (Phyrexia: All Will Be One): $0.35 at Card Kingdom, near mint, their price list as of .
Mandible Justiciar 
Artifact Creature — Phyrexian Cleric · 2/1 · Common · Phyrexia: All Will Be One · #21
Lifelink
Whenever another artifact you control enters, this creature gets +1/+1 until end of turn.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Phyrexia: All Will Be One | 21 | Common | $0.35 | $0.49 |