Cheapest priced copy (Battlebond): $0.35 at Card Kingdom, near mint, their price list as of .
Oreskos Explorer 
Creature — Cat Scout · 2/2 · Uncommon · The List · #C21-98
When this creature enters, search your library for up to X Plains cards, where X is the number of players who control more lands than you. Reveal those cards, put them into your hand, then shuffle.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
8 printings · $0.35 to $11.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Battlebond | 100 | Uncommon | $0.35 | $11.99 |
| Commander 2015 | 6 | Uncommon | $0.35 | — |
| Commander 2017 | 68 | Uncommon | $0.35 | — |
| Commander 2021 | 98 | Uncommon | $0.35 | — |
| Commander Anthology Volume II | 32 | Uncommon | $0.35 | — |
| Commander Masters | 832 | Uncommon | $0.35 | — |
| Commander Legends | 381 | Uncommon | $0.35 | — |
| The List | C21-98 | Uncommon | $0.35 | — |
2 rulings from Wizards of the Coast
- 4 November 2015If no player controls more lands than you do, you'll still search and shuffle your library, although you can't find any cards.
- 4 November 2015The value of X is determined as Oreskos Explorer's triggered ability resolves.