Cheapest priced copy (Fifth Edition): $0.35 at Card Kingdom, near mint, their price list as of .
Kjeldoran Dead 
Creature — Skeleton · 3/1 · Common · Ice Age · #137
When this creature enters, sacrifice a creature.
{B}: Regenerate this creature.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
4 printings · $0.35 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Fifth Edition | 170 | Common | $0.35 | — |
| Classic Sixth Edition | 140 | Common | $0.35 | — |
| Coldsnap Theme Decks | 137 | Common | $0.35 | — |
| Ice Age | 137 | Common | $0.35 | — |
2 rulings from Wizards of the Coast
- 4 October 2004The sacrifice is a triggered ability and not a cost.
- 1 October 2008When Kjeldoran Dead's "enters" ability resolves, if you don't control any other creatures, you must sacrifice Kjeldoran Dead itself.