Cheapest priced copy (Planar Chaos): $0.35 at Card Kingdom, near mint, their price list as of .
Riptide Pilferer 
Creature — Merfolk Rogue · 1/1 · Uncommon · Time Spiral Remastered · #83
Whenever this creature deals combat damage to a player, that player discards a card.
Morph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Planar Chaos | 60 | Uncommon | $0.35 | $0.49 |
| Time Spiral Remastered | 83 | Uncommon | $0.35 | $0.49 |