Cheapest priced copy (Shards of Alara): $0.35 at Card Kingdom, near mint, their price list as of .
Skeletal Kathari 
Creature — Bird Skeleton · 3/2 · Common · Shards of Alara · #88
Flying
{B}, Sacrifice a creature: Regenerate this creature.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Shards of Alara | 88 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 1 October 2008You may sacrifice Skeletal Kathari to pay for its own regeneration ability. If you do, however, it won’t regenerate. It’ll just end up in its owner’s graveyard as a result of the sacrifice.