Cheapest priced copy (Planeshift): $0.35 at Card Kingdom, near mint, their price list as of .
Heroic Defiance 
Enchantment — Aura · Common · Planeshift · #6
Enchant creature
Enchanted creature gets +3/+3 unless it shares a color with the most common color among all permanents or a color tied for most common.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
1 printing · $0.35 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Planeshift | 6 | Common | $0.35 | $0.99 |