Cheapest priced copy (Gatecrash): $0.35 at Card Kingdom, near mint, their price list as of .
Arrows of Justice 
Instant · Uncommon · Gatecrash · #211
Arrows of Justice deals 4 damage to target attacking or blocking creature.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Gatecrash | 211 | Uncommon | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 24 January 2013An “attacking creature” or “blocking creature” is one that has been declared as an attacker or blocker this combat, or one that was put onto the battlefield attacking or blocking this combat. Unless that creature leaves combat, it continues to be an attacking or blocking creature through the end of combat step, even if the player it was attacking has left the game, the planeswalker it was attacking has left combat, or the creature or creatures it was blocking have left combat, as appropriate.
- 24 January 2013Arrows of Justice may be cast during the end of combat step, after combat damage has been dealt.