Cheapest priced copy (Darksteel): $0.69 at Card Kingdom, near mint, their price list as of .
Hallow 
Instant · Common · Darksteel · #4
Prevent all damage target spell would deal this turn. You gain life equal to the damage prevented this way.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.69 to $6.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Darksteel | 4 | Common | $0.69 | $6.99 |