Cheapest priced copy (Future Sight): $0.35 at Card Kingdom, near mint, their price list as of .
Saltskitter 
Creature — Wurm · 3/4 · Common · Future Sight · #14
Whenever another creature enters, exile this creature. Return this creature to the battlefield under its owner's control at the beginning of the next end step.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.35 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Future Sight | 14 | Common | $0.35 | $1.99 |
One ruling from Wizards of the Coast
- 1 May 2007If a creature enters after "at the beginning of the end step" abilities have triggered during that turn, Saltskitter won't return to the battlefield until the end of the following turn.