Cheapest priced copy (Dark Ascension): $0.69 at Card Kingdom, near mint, their price list as of .
Curse of Exhaustion 
Enchantment — Aura Curse · Uncommon · Dark Ascension · #5
Enchant player
Enchanted player can't cast more than one spell each turn.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.69 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Dark Ascension | 5 | Uncommon | $0.69 | $2.49 |
One ruling from Wizards of the Coast
- 22 January 2011Curse of Exhaustion will look at the entire turn to see if the enchanted player has cast a spell yet that turn, even if Curse of Exhaustion wasn’t on the battlefield when that spell was cast.