Cheapest priced copy (Urza's Destiny): $0.49 at Card Kingdom, near mint, their price list as of .
Scrying Glass 
Artifact · Rare · Urza's Destiny · #137
{3}, {T}: Choose a number greater than 0 and a color. Target opponent reveals their hand. If that opponent reveals exactly the chosen number of cards of the chosen color, you draw a card.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.49 to $8.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Urza's Destiny | 137 | Rare | $0.49 | $8.99 |
2 rulings from Wizards of the Coast
- 4 October 2004The only valid colors are white, black, blue, red, and green.
- 4 October 2004You choose a target opponent on announcement. You choose a number and color during resolution, then the targeted opponent reveals their hand.