Cheapest priced copy (Mirrodin): $0.35 at Card Kingdom, near mint, their price list as of .
Goblin War Wagon 
Artifact Creature — Juggernaut · 3/3 · Common · Mirrodin · #179
This creature doesn't untap during your untap step.
At the beginning of your upkeep, you may pay {2}. If you do, untap this creature.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Mirrodin | 179 | Common | $0.35 | $0.49 |