Cheapest priced copy (Champions of Kamigawa): $0.49 at Card Kingdom, near mint, their price list as of .
Moonring Mirror 
Artifact · Rare · Champions of Kamigawa · #262
Whenever you draw a card, exile the top card of your library face down.
At the beginning of your upkeep, you may exile all cards from your hand face down. If you do, put all other cards you own exiled with this artifact into your hand.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.49 to $3.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Champions of Kamigawa | 262 | Rare | $0.49 | $3.49 |
2 rulings from Wizards of the Coast
- 1 December 2004Note that Moonring Mirror’s first ability is not a replacement effect.
- 1 December 2004If you choose to use Moonring Mirror’s second ability, you return all the cards you own exiled by both of its abilities, but not any of the cards you just exiled from your hand.