Cheapest priced copy (March of the Machine): $0.35 at Card Kingdom, near mint, their price list as of .
Arachnoid Adaptation 
Instant · Common · March of the Machine · #175
Target creature gets +2/+2 and gains reach until end of turn. Untap it.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| March of the Machine | 175 | Common | $0.35 | $0.49 |