Cheapest priced copy (The List): $2.49 at Card Kingdom, near mint, their price list as of .
Vampiric Link 
Enchantment — Aura · Common · Planar Chaos · #92
Enchant creature
Whenever enchanted creature deals damage, you gain that much life.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
2 printings · $2.49 to $27.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Planar Chaos | 92 | Common | $2.79 | $27.99 |
| The List | PLC-92 | Common | $2.49 | — |
One ruling from Wizards of the Coast
- 1 April 2008You gain life for all damage which is not prevented, regardless of what the creature damages (player or another creature) or the toughness of the blocking creature. If you put this on a 5/5 and it is blocked by a 1/1, you still gain 5 life.