Cheapest priced copy (Marvel Super Heroes): $0.99 at Card Kingdom, near mint, their price list as of .
Super-Soldier Serum 
Enchantment — Aura · Rare · Marvel Super Heroes · #38
Enchant creature
Enchanted creature gets +2/+2, has first strike and vigilance, and is a legendary Soldier in addition to its other types.
Whenever enchanted creature attacks or blocks, attach any number of target Equipment you control to it.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
2 printings · $0.79 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Marvel Super Heroes | 38 | Rare | $0.99 | $0.79 |
| Marvel Super Heroes | 299 | Rare | $1.29 | $1.99 |