Cheapest priced copy (Commander Masters): $0.35 at Card Kingdom, near mint, their price list as of .
Shipwreck Dowser 
Creature — Merfolk Wizard · 3/3 · Common · Commander Masters · #119
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When this creature enters, return target instant or sorcery card from your graveyard to your hand.
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
5 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Masters | 119 | Common | $0.35 | $0.49 |
| Foundations | 596 | Uncommon | $0.35 | — |
| Foundations Jumpstart | 354 | Common | $0.35 | — |
| Core Set 2021 | 71 | Uncommon | $0.35 | $0.49 |
| The List | M21-71 | Uncommon | $0.35 | — |