Cheapest priced copy (Visions): $0.35 at Card Kingdom, near mint, their price list as of .
Shimmering Efreet 
Creature — Efreet · 2/2 · Uncommon · Visions · #42
Flying
Phasing (This phases in or out before you untap during each of your untap steps. While it's phased out, it's treated as though it doesn't exist.)
Whenever this creature phases in, target creature phases out. (It phases in before its controller untaps during their next untap step.)
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.35 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Visions | 42 | Uncommon | $0.35 | — |
2 rulings from Wizards of the Coast
- 4 October 2004If it phases in and no other creatures are on the battlefield, it will phase itself back out.
- 4 October 2004If two of these phase in, they can both target the same creature and have just that one creature phase out.