Cheapest priced copy (Marvel Super Heroes): $0.35 at Card Kingdom, near mint, their price list as of .
Hydraulic Helper 
Artifact Creature — Robot · 2/3 · Common · Marvel Super Heroes · #57
Defender
{T}: Add {U}. This mana can't be spent to cast a nonartifact spell.
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Marvel Super Heroes | 57 | Common | $0.35 | $0.49 |