Cheapest priced copy (Seventh Edition): $15.99 at Card Kingdom, near mint, their price list as of .
Caltrops 
Artifact · Uncommon · Urza's Destiny · #129
Whenever a creature attacks, this artifact deals 1 damage to it.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
4 printings · $15.99 to $199.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Seventh Edition | 288 | Uncommon | $15.99 | — |
| Seventh Edition | 288★ | Uncommon | — | $199.99 |
| The List | UDS-129 | Uncommon | — | — |
| Urza's Destiny | 129 | Uncommon | $15.99 | $64.99 |