Cheapest priced copy (Shadowmoor): $0.99 at Card Kingdom, near mint, their price list as of .
Witherscale Wurm 
Creature — Wurm · 9/9 · Rare · Shadowmoor · #134
Whenever this creature blocks or becomes blocked by a creature, that creature gains wither until end of turn. (It deals damage to creatures in the form of -1/-1 counters.)
Whenever this creature deals damage to an opponent, remove all -1/-1 counters from it.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.99 to $4.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Shadowmoor | 134 | Rare | $0.99 | $4.49 |
2 rulings from Wizards of the Coast
- 1 May 2008Witherscale Wurm’s second ability triggers when it deals any damage to an opponent, not just combat damage.
- 1 May 2008Witherscale Wurm’s first ability does *not* give Witherscale Wurm wither.