Cheapest priced copy (Battlebond): $0.35 at Card Kingdom, near mint, their price list as of .
Blood Feud 
Sorcery · Uncommon · Dark Ascension · #83
Target creature fights another target creature. (Each deals damage equal to its power to the other.)
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Battlebond | 168 | Uncommon | $0.35 | $0.49 |
| Dark Ascension | 83 | Uncommon | $0.35 | $0.49 |
| Foundations Jumpstart | 130 | Uncommon | $0.35 | — |
One ruling from Wizards of the Coast
- 22 January 2011Blood Feud can target two creatures with the same controller.