Cheapest priced copy (Weatherlight): $0.99 at Card Kingdom, near mint, their price list as of .
Thran Tome 
Artifact — Book · Rare · Weatherlight · #160
{5}, {T}: Reveal the top three cards of your library. Target opponent chooses one of those cards. Put that card into your graveyard, then draw two cards.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Weatherlight | 160 | Rare | $0.99 | — |
2 rulings from Wizards of the Coast
- 15 October 2006It does not target the cards, but it targets the opponent. If you can’t target an opponent, you can’t activate this ability.
- 1 May 2007After the opponent chooses which card to put into your graveyard, you draw two cards regardless of how many were actually revealed or how many you have left in your library.