Cheapest priced copy (Gatecrash): $1.49 at Card Kingdom, near mint, their price list as of .
Signal the Clans 
Instant · Rare · Gatecrash · #194
Search your library for three creature cards and reveal them. If you reveal three cards with different names, choose one of them at random and put that card into your hand. Shuffle the rest into your library.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $1.49 to $4.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Gatecrash | 194 | Rare | $1.49 | $4.99 |
2 rulings from Wizards of the Coast
- 24 January 2013All players will see the card you put into your hand, if any.
- 24 January 2013If you don’t reveal three creature cards with different names, you’ll simply shuffle your library (including any cards you revealed).