Cheapest priced copy (Commander Legends: Battle for Baldur's Gate): $0.69 at Card Kingdom, near mint, their price list as of .
Aven Mindcensor 
Creature — Bird Wizard · 2/1 · Uncommon · Future Sight · #18
Flash
Flying
If an opponent would search a library, that player searches the top four cards of that library instead.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
9 printings · $0.69 to $47.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Amonkhet | 5 | Rare | $0.99 | $2.49 |
| Commander Legends: Battle for Baldur's Gate | 688 | Uncommon | $0.69 | — |
| Future Sight | 18 | Uncommon | $1.99 | $14.99Out of stock |
| Amonkhet Invocations | 2 | Special | — | $47.99 |
| Amonkhet Promos | 5p | Rare | $0.99 | $4.49 |
| Amonkhet Promos | 5s | Rare | — | $4.99 |
| Love Your LGS 2021 | 1 | Rare | — | $1.29 |
| The List | TSR-5 | Uncommon | $0.69 | — |
| Time Spiral Remastered | 5 | Uncommon | $0.79 | $1.99 |
4 rulings from Wizards of the Coast
- 19 March 2021For effects that check whether a player searched a library or may search a library, searching the top four cards of that library counts as searching that library.
- 19 March 2021After the search is complete, the entire library is shuffled.
- 19 March 2021Each search works exactly the same as normal except that the opponent doing the searching sees only the top four cards of that library. They can't look at the other cards in that library at all. Cards not in the top four cards of the library can't be found in the search, even if they're identifiable in some manner.
- 19 March 2021If an effect uses the word "search" once but allows an opponent to search for multiple cards, the top four cards remain the same throughout the entire search. Finding one card won't cause the fifth card to become included in the search.