Cheapest priced copy (Duel Decks: Jace vs. Vraska): $0.79 at Card Kingdom, near mint, their price list as of .
Thought Scour 
Instant · Rare · Store Championships · #51
Target player mills two cards.
Draw a card.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
12 printings · $0.79 to $15.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Double Masters 2022 | 65 | Common | $0.99 | $0.79 |
| Double Masters 2022 | 351 | Common | $1.49 | $1.99 |
| Duel Decks: Jace vs. Vraska | 21 | Common | $0.79 | — |
| Dark Ascension | 52 | Common | $0.99 | $8.99 |
| Iconic Masters | 76 | Common | $0.79 | $1.49 |
| Jumpstart | 185 | Common | $0.99 | — |
| The List | IMA-76 | Common | $0.99Out of stock | — |
| Store Championships | 51 | Rare | $4.99Out of stock | — |
| Secret Lair Drop | 2479 | Rare | $12.99 | $15.99 |
| The Zeta Set | 31 | Common | — | — |
| The Zeta Set | 152 | Common | — | — |
| The Zeta Set | 273 | Common | — | — |
2 rulings from Wizards of the Coast
- 22 January 2011Follow the instructions in the order listed on the card: if you target yourself, you'll put the top two cards of your library into your graveyard and then draw a card.
- 22 January 2011If the target player is an illegal target when Thought Scour tries to resolve, it won't resolve and none of its effects will happen. You won't draw a card.