Cheapest priced copy (Betrayers of Kamigawa): $0.35 at Card Kingdom, near mint, their price list as of .
Unchecked Growth 
Instant — Arcane · Uncommon · Betrayers of Kamigawa · #148
Target creature gets +4/+4 until end of turn. If it's a Spirit, it gains trample until end of turn.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Betrayers of Kamigawa | 148 | Uncommon | $0.35 | $0.49 |