Cheapest priced copy (Conspiracy): $0.35 at Card Kingdom, near mint, their price list as of .
Howling Wolf 
Creature — Wolf · 2/2 · Common · Mercadian Masques · #252
When this creature enters, you may search your library for up to three cards named Howling Wolf, reveal them, put them into your hand, then shuffle.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
2 printings · $0.35 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Conspiracy | 167 | Common | $0.35 | $0.49 |
| Mercadian Masques | 252 | Common | $0.35 | $1.99 |