Cheapest priced copy (Conspiracy: Take the Crown): $0.35 at Card Kingdom, near mint, their price list as of .
Farbog Boneflinger 
Creature — Zombie · 2/2 · Uncommon · Dark Ascension · #61
When this creature enters, target creature gets -2/-2 until end of turn.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Conspiracy: Take the Crown | 134 | Uncommon | $0.35 | $0.49 |
| Dark Ascension | 61 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 22 January 2011Farbog Boneflinger’s ability is mandatory. If it’s the only creature on the battlefield, you must choose it as the target and give it -2/-2 until end of turn.