Cheapest priced copy (Duels of the Planeswalkers): $0.35 at Card Kingdom, near mint, their price list as of .
Howl of the Night Pack 
Sorcery · Uncommon · Salvat 2011 · #141
Create a 2/2 green Wolf creature token for each Forest you control.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
6 printings · $0.35 to $3.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duels of the Planeswalkers | 69 | Uncommon | $0.35 | — |
| Magic 2010 | 187 | Uncommon | $0.35 | $0.49 |
| Magic 2014 | 178 | Uncommon | $0.35 | $1.49 |
| Salvat 2011 | 141 | Uncommon | — | — |
| Shadowmoor | 119 | Uncommon | $0.35 | $1.99 |
| Secret Lair Drop | 1610 | Rare | $1.49 | $3.49 |
2 rulings from Wizards of the Coast
- 1 July 2013The number of Wolves you put onto the battlefield is based on the number of Forests you control when Howl of the Night Pack resolves.
- 1 July 2013Howl of the Night Pack counts any land you control with the subtype Forest, not just ones named Forest.