Cheapest priced copy (Jumpstart 2022): $0.35 at Card Kingdom, near mint, their price list as of .
River Sneak 
Creature — Merfolk Warrior · 1/1 · Uncommon · Ixalan · #70
This creature can't be blocked.
Whenever another Merfolk you control enters, this creature gets +1/+1 until end of turn.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Jumpstart 2022 | 339 | Uncommon | $0.35 | — |
| Ixalan | 70 | Uncommon | $0.35 | $0.79 |