Cheapest priced copy (Darksteel): $0.35 at Card Kingdom, near mint, their price list as of .
Tears of Rage 
Instant · Uncommon · Darksteel · #70
Cast this spell only during the declare attackers step.
Attacking creatures you control get +X/+0 until end of turn, where X is the number of attacking creatures. Sacrifice those creatures at the beginning of the next end step.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.35 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Darksteel | 70 | Uncommon | $0.35 | $1.99 |
| Salvat 2005 | I3 | Uncommon | — | — |