Cheapest priced copy (Tenth Edition): $0.35 at Card Kingdom, near mint, their price list as of .
Arcane Teachings 
Enchantment — Aura · Common · The List · #JUD-78
Enchant creature (Target a creature as you cast this. This card enters attached to that creature.)
Enchanted creature gets +2/+2 and has "{T}: This creature deals 1 damage to any target."
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
5 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Tenth Edition | 188 | Uncommon | $0.35 | — |
| Tenth Edition | 188★ | Uncommon | — | $0.49 |
| Judgment | 78 | Common | $0.35 | $0.79 |
| The List | JUD-78 | Common | $0.35 | — |
| The List | JUD-78† | Common | — | — |