Cheapest priced copy (Lorwyn): $0.35 at Card Kingdom, near mint, their price list as of .
Entangling Trap 
Enchantment · Uncommon · Lorwyn · #13
Whenever you clash, tap target creature an opponent controls. If you won, that creature doesn't untap during its controller's next untap step. (This ability triggers after the clash ends.)
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Lorwyn | 13 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 20 September 2013If you clash because of a spell or ability an opponent controls, the ability will still trigger. Likewise, you can still win the clash even if you weren’t the player to initiate it.