Cheapest priced copy (Gatecrash): $0.35 at Card Kingdom, near mint, their price list as of .
Dying Wish 
Enchantment — Aura · Uncommon · Gatecrash · #64
Enchant creature you control
When enchanted creature dies, target player loses X life and you gain X life, where X is its power.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Gatecrash | 64 | Uncommon | $0.35 | $1.49 |
2 rulings from Wizards of the Coast
- 24 January 2013Use the creature’s power the last time it was on the battlefield to determine how much life the target player loses and how much life you gain.
- 24 January 2013If another player gains control of either Dying Wish or the enchanted creature (but not both), Dying Wish will be enchanting an illegal permanent. The Aura will be put into its owner’s graveyard as a state-based action.