Cheapest priced copy (Eternal Masters): $0.35 at Card Kingdom, near mint, their price list as of .
Emperor Crocodile 
Creature — Crocodile · 5/5 · Rare · Urza's Destiny · #105
When you control no other creatures, sacrifice this creature.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
6 printings · $0.35 to $14.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Eighth Edition | 246 | Rare | $0.49 | — |
| Eighth Edition | 246★ | Rare | — | $1.49 |
| Ninth Edition | 241 | Rare | $0.49 | — |
| Ninth Edition | 241★ | Rare | — | $1.49Out of stock |
| Eternal Masters | 165 | Common | $0.35 | $0.49 |
| Urza's Destiny | 105 | Rare | $0.49 | $14.99 |
2 rulings from Wizards of the Coast
- 8 June 2016The ability only checks if you control no other creatures at the time it triggers. It does not check again on resolution, so gaining control of a creature before then will not save Emperor Crocodile.
- 8 June 2016Emperor Crocodile’s ability will trigger if you don’t control another creature, even if it’s only for a brief moment during the resolution of another spell or ability (such as that of Brago, King Eternal).