Cheapest priced copy (Duel Decks: Merfolk vs. Goblins): $0.35 at Card Kingdom, near mint, their price list as of .
Tidal Wave 
Instant · Uncommon · Mirage · #100
Create a 5/5 blue Wall creature token with defender. Sacrifice it at the beginning of the next end step.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
4 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duel Decks: Merfolk vs. Goblins | 21 | Common | $0.35 | — |
| Eternal Masters | 75 | Common | $0.35 | $0.49 |
| Mirage | 100 | Uncommon | $0.39 | — |
| The List | EMA-75 | Common | $0.35 | — |