Cheapest priced copy (Duel Decks: Merfolk vs. Goblins): $0.35 at Card Kingdom, near mint, their price list as of .
Inkfathom Divers 
Creature — Merfolk Soldier · 3/3 · Common · The List · #DDT-8
Islandwalk (This creature can't be blocked as long as defending player controls an Island.)
When this creature enters, look at the top four cards of your library, then put them back in any order.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duel Decks: Merfolk vs. Goblins | 8 | Common | $0.35 | — |
| Lorwyn | 70 | Common | $0.35 | $0.49 |
| The List | DDT-8 | Common | $0.35 | — |