Cheapest priced copy (Aether Revolt): $0.35 at Card Kingdom, near mint, their price list as of .
Salvage Scuttler 
Creature — Crab · 4/4 · Uncommon · Aether Revolt · #43
Whenever this creature attacks, return an artifact you control to its owner's hand.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Aether Revolt | 43 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 9 February 2017If you control no artifacts, you won’t return anything to your hand. There’s no penalty for being unable to do so.