Cheapest priced copy (Commander 2016): $9.49 at Card Kingdom, near mint, their price list as of .
Curse of Vengeance 
Enchantment — Aura Curse · Rare · Commander 2016 · #12
Enchant player
Whenever enchanted player casts a spell, put a spite counter on this Aura.
When enchanted player loses the game, you gain X life and draw X cards, where X is the number of spite counters on this Aura.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $9.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2016 | 12 | Rare | $9.49 | — |
2 rulings from Wizards of the Coast
- 8 November 2016Curse of Vengeance's first triggered ability resolves before the spell that caused it to trigger. The ability will resolve even if that spell is countered.
- 8 November 2016If you and the enchanted player both reach 0 or less life at the same time, you'll lose the game before Curse of Vengeance's second triggered ability gives you more life.