Cheapest priced copy (Chronicles): $0.49 at Card Kingdom, near mint, their price list as of .
Nebuchadnezzar 
Legendary Creature — Human Wizard · 3/3 · Rare · Chronicles Foreign Black Border · #80
{X}, {T}: Choose a card name. Target opponent reveals X cards at random from their hand. Then that player discards all cards with that name revealed this way. Activate only during your turn.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
3 printings · $0.49 to $42.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Chronicles Foreign Black Border | 80 | Rare | — | — |
| Chronicles | 80 | Rare | $0.49 | — |
| Legends | 245 | Rare | $42.99 | — |
2 rulings from Wizards of the Coast
- 1 October 2009You may activate the ability only during your turn, but you may do so any time you have priority. (In other words, it’s not restricted to only the times you could cast a sorcery.)
- 1 October 2009You don’t name a card until the ability resolves. Once you name a card, it’s too late for the targeted opponent to respond.