Cheapest priced copy (Ravnica: City of Guilds): $0.99 at Card Kingdom, near mint, their price list as of .
Perplex 
Instant · Common · Ravnica: City of Guilds · #217
Counter target spell unless its controller discards their hand.
Transmute {1}{U}{B} ({1}{U}{B}, Discard this card: Search your library for a card with the same mana value as this card, reveal it, put it into your hand, then shuffle. Transmute only as a sorcery.)
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.99 to $13.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ravnica: City of Guilds | 217 | Common | $0.99 | $13.99 |
One ruling from Wizards of the Coast
- 1 October 2005If the spell’s controller has no cards in their hand, that player can still choose to discard their hand and prevent the spell from being countered.