Cheapest priced copy (Innistrad: Crimson Vow): $2.49 at Card Kingdom, near mint, their price list as of .
Howling Moon 
Enchantment · Rare · Innistrad: Crimson Vow · #391
At the beginning of combat on your turn, target Wolf or Werewolf you control gets +2/+2 until end of turn.
Whenever an opponent casts their second spell each turn, create a 2/2 green Wolf creature token.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $2.49 to $11.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Innistrad: Double Feature | 471 | Rare | $4.49 | $11.99Out of stock |
| Innistrad: Crimson Vow Promos | 204s | Rare | — | $3.99 |
| Innistrad: Crimson Vow | 204 | Rare | $2.49 | $2.99 |
| Innistrad: Crimson Vow | 391 | Rare | $3.99 | $4.99 |