Cheapest priced copy (Edge of Eternities Commander): $16.99 at Card Kingdom, near mint, their price list as of .
Swan Song 
Instant · Rare · Theros · #65
Counter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
8 printings · $16.99 to $79.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2016 | 98 | Rare | $19.99 | — |
| Edge of Eternities Commander | 46 | Rare | $16.99 | — |
| Tales of Middle-earth Commander | 197 | Rare | $17.99 | — |
| Secret Lair Drop | 91 | Rare | $24.99 | — |
| Secret Lair Drop | 922 | Rare | — | $27.99 |
| Secret Lair Drop | 1591 | Rare | $59.99 | $64.99 |
| Secret Lair Drop | 2829 | Rare | — | — |
| Theros | 65 | Rare | $19.99 | $79.99 |
One ruling from Wizards of the Coast
- 15 September 2013Swan Song can target a spell that can't be countered. That spell won't be countered when Swan Song resolves, but its controller will get a Bird token.