Cheapest priced copy (The List): $0.79 at Card Kingdom, near mint, their price list as of .
Cold Storage 
Artifact · Rare · Tempest · #280
{3}: Exile target creature you control.
Sacrifice this artifact: Return each creature card exiled with this artifact to the battlefield under your control.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.79 to $1.79 at Card Kingdom
3 rulings from Wizards of the Coast
- 4 October 2004If this card leaves the battlefield, the cards it exiled remain exiled.
- 4 October 2004If it exiles a token creature, the token ceases to exist and will not return.
- 1 April 2008For a time, the second ability returned all cards exiled by it to the battlefield, regardless of what types they had while exiled. It has been restored to its original functionality, so only cards that actually have the type Creature will get returned.