Cheapest priced copy (Ice Age): $0.35 at Card Kingdom, near mint, their price list as of .
Battle Cry 
Instant · Uncommon · Ice Age · #5
Untap all white creatures you control.
Whenever a creature blocks this turn, it gets +0/+1 until end of turn.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.35 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ice Age | 5 | Uncommon | $0.35 | — |