Cheapest priced copy (Coldsnap): $0.35 at Card Kingdom, near mint, their price list as of .
Kjeldoran War Cry 
Instant · Common · Coldsnap · #13
Creatures you control get +X/+X until end of turn, where X is 1 plus the number of cards named Kjeldoran War Cry in all graveyards.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Coldsnap | 13 | Common | $0.35 | $0.49 |