Cheapest priced copy (Dissension): $4.99 at Card Kingdom, near mint, their price list as of .
Dovescape 
Enchantment · Rare · Secret Lair Drop · #95
({W/U} can be paid with either {W} or {U}.)
Whenever a player casts a noncreature spell, counter that spell. That player creates X 1/1 white and blue Bird creature tokens with flying, where X is the spell's mana value.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
3 printings · $4.99 to $32.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Dissension | 143 | Rare | $4.99 | $32.99 |
| RNA Guild Kit | 11 | Rare | $4.99 | — |
| Secret Lair Drop | 95 | Rare | $6.49 | — |
2 rulings from Wizards of the Coast
- 1 May 2006The Bird tokens are created even if the spell isn't countered by Dovescape's ability. This may happen because the spell can't be countered, because it's already been countered, or because it's otherwise been removed from the stack by the time Dovescape's ability resolves.
- 1 May 2006If a split card is cast, Dovescape makes tokens equal to the mana value of the half that was cast.