Cheapest priced copy (Marvel Super Heroes Commander): $0.35 at Card Kingdom, near mint, their price list as of .
Robotics Mastery 
Enchantment — Aura · Uncommon · Marvel's Spider-Man · #41
Flash
Enchant creature
When this Aura enters, create two 1/1 colorless Robot artifact creature tokens with flying.
Enchanted creature gets +2/+2.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Marvel Super Heroes Commander | 786 | Uncommon | $0.35 | $0.49 |
| Marvel's Spider-Man | 41 | Uncommon | $0.35 | $0.49 |