Cheapest priced copy (Guildpact): $0.35 at Card Kingdom, near mint, their price list as of .
Infiltrator's Magemark 
Enchantment — Aura · Common · Salvat 2005 · #G19
Enchant creature
Creatures you control that are enchanted get +1/+1 and can't be blocked except by creatures with defender.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
3 printings · $0.35 to $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Guildpact | 28 | Common | $0.35 | $0.99 |
| Salvat 2005 | G7 | Common | — | — |
| Salvat 2005 | G19 | Common | — | — |