Cheapest priced copy (Avacyn Restored): $0.35 at Card Kingdom, near mint, their price list as of .
Wandering Wolf 
Creature — Wolf · 2/1 · Common · Avacyn Restored · #202
Creatures with power less than this creature's power can't block it.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
2 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Avacyn Restored | 202 | Common | $0.35 | $0.49 |
| Battlebond | 216 | Common | $0.35 | $0.79 |
One ruling from Wizards of the Coast
- 1 May 2012The comparison of power is only done when blockers are declared. Increasing the power of a blocking creature (or decreasing the power of Wandering Wolf) after this point won’t cause any creature to stop blocking or become unblocked.