Cheapest priced copy (Modern Horizons 3): $3.49 at Card Kingdom, near mint, their price list as of .
Strix Serenade 
Instant · Rare · Modern Horizons 3 Promos · #71p
Counter target artifact, creature, or planeswalker spell. Its controller creates a 2/2 blue Bird creature token with flying.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
4 printings · $3.49 to $15.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Horizons 3 | 71 | Rare | $3.49 | $4.99 |
| Modern Horizons 3 | 327 | Rare | $5.49 | $15.99 |
| Modern Horizons 3 Promos | 71p | Rare | $3.49 | $5.99 |
| Modern Horizons 3 Promos | 71s | Rare | — | $7.49 |
One ruling from Wizards of the Coast
- 7 June 2024Strix Serenade can target a spell that can't be countered. That spell won't be countered when Strix Serenade resolves, but its controller will get a Bird token. (This won't come up often, but when it does, it'll be a hoot.)