Cheapest priced copy (Mirage): $0.35 at Card Kingdom, near mint, their price list as of .
Unerring Sling 
Artifact · Uncommon · Mirage · #322
{3}, {T}, Tap an untapped creature you control: This artifact deals damage equal to the tapped creature's power to target attacking or blocking creature with flying.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.35 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Mirage | 322 | Uncommon | $0.35 | — |