Cheapest priced copy (Outlaws of Thunder Junction Commander): $0.35 at Card Kingdom, near mint, their price list as of .
Mistmeadow Skulk 
Creature — Kithkin Rogue · 1/1 · Uncommon · Shadowmoor · #14
Lifelink, protection from mana value 3 or greater
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
4 printings · $0.35 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Future Sight | 27 | Uncommon | $0.39 | $2.49 |
| Outlaws of Thunder Junction Commander | 84 | Uncommon | $0.35 | — |
| The List | SHM-14 | Uncommon | $0.35 | — |
| Shadowmoor | 14 | Uncommon | $0.35 | $1.99 |
3 rulings from Wizards of the Coast
- 1 May 2007A face-down creature has a mana value of 0, so Mistmeadow Skulk doesn't have protection from it .
- 1 May 2007While a spell with X in its cost is on the stack, its mana value takes the chosen value of X into account. Mistmeadow Skulk can be chosen as a target for a Blaze (which has mana cost {X}{R}) if X is 0 or 1, for example, but it can't be chosen as a target for a Blaze if X is 2 or more.
- 1 May 2008The protection ability means the following: - Mistmeadow Skulk can't be blocked by creatures with mana value 3 or greater. - Mistmeadow Skulk can't be enchanted by Auras with mana value 3 or greater. It also can't be equipped by Equipment with mana value 3 or greater. - Mistmeadow Skulk can't be targeted by spells with mana value 3 or greater. It also can't be targeted by abilities from sources with mana value 3 or greater. - All damage that would be dealt to Mistmeadow Skulk by sources with mana value 3 or greater is prevented.