Cheapest priced copy (Outlaws of Thunder Junction): $0.35 at Card Kingdom, near mint, their price list as of .
Mystical Tether 
Enchantment · Common · Outlaws of Thunder Junction · #19
You may cast this spell as though it had flash if you pay {2} more to cast it.
When this enchantment enters, exile target artifact or creature an opponent controls until this enchantment leaves the battlefield.
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Outlaws of Thunder Junction | 19 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 12 April 2024If Mystical Tether leaves the battlefield before its triggered ability resolves, the target artifact or creature won't be exiled at all.