Cheapest priced copy (Rise of the Eldrazi): $0.35 at Card Kingdom, near mint, their price list as of .
Vendetta 
Instant · Common · Rise of the Eldrazi · #130
Destroy target nonblack creature. It can't be regenerated. You lose life equal to that creature's toughness.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
4 printings · $0.35 to $44.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Mercadian Masques | 170 | Common | $0.59 | $44.99 |
| The List | MMQ-170 | Common | $0.39 | — |
| Rise of the Eldrazi | 130 | Common | $0.35 | $4.99 |
| World Championship Decks 2001 | tvdl170 | Common | $0.59 | — |
3 rulings from Wizards of the Coast
- 15 June 2010If the targeted creature isn't destroyed due to umbra armor's effect, Vendetta continues to resolve. You lose life equal to the creature's current toughness (after the Aura with umbra armor has been destroyed).
- 15 June 2010The destroyed creature's last existence on the battlefield is checked to determine its toughness.
- 15 June 2010If the targeted creature is an illegal target by the time Vendetta resolves, the spell doesn't resolve. You won't lose life.