Cheapest priced copy (Dark Ascension): $0.99 at Card Kingdom, near mint, their price list as of .
Immerwolf 
Creature — Wolf · 2/2 · Rare · Secret Lair Drop · #809
Intimidate (This creature can't be blocked except by artifact creatures and/or creatures that share a color with it.)
Each other creature you control that's a Wolf or a Werewolf gets +1/+1.
Non-Human Werewolves you control can't transform.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.99 to $8.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Dark Ascension | 141 | Uncommon | $0.99 | $8.99 |
| Secret Lair Drop | 809 | Rare | $5.49 | $4.99 |
3 rulings from Wizards of the Coast
- 22 January 2011A “non-Human Werewolf” is a creature that is a Werewolf but is not a Human.
- 22 January 2011A creature that’s both a Wolf and a Werewolf gets the bonus only once.
- 22 January 2011Immerwolf’s bonus never applies to itself, even if it somehow becomes a Werewolf creature.