Cheapest priced copy (Commander 2017): $0.49 at Card Kingdom, near mint, their price list as of .
Harbinger of the Tides 
Creature — Merfolk Wizard · 2/2 · Rare · Foundations · #593
You may cast this spell as though it had flash if you pay {2} more to cast it. (You may cast it any time you could cast an instant.)
When this creature enters, you may return target tapped creature an opponent controls to its owner's hand.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
6 printings · $0.49 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2017 | 85 | Rare | $0.49 | — |
| Duel Decks: Merfolk vs. Goblins | 7 | Rare | $0.49 | — |
| Foundations | 593 | Rare | $0.49 | — |
| Jumpstart 2022 | 306 | Rare | $0.49 | — |
| Magic Origins | 58 | Rare | $0.49 | $1.99 |
| Magic Origins Promos | 58s | Rare | — | $2.99 |