Cheapest priced copy (Duel Decks: Izzet vs. Golgari): $0.35 at Card Kingdom, near mint, their price list as of .
Boneyard Wurm 
Creature — Wurm · */* · Uncommon · Innistrad · #171
Boneyard Wurm's power and toughness are each equal to the number of creature cards in your graveyard.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
4 printings · $0.35 to $2.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duel Decks: Izzet vs. Golgari | 51 | Uncommon | $0.35 | — |
| Innistrad | 171 | Uncommon | $0.35 | $0.49 |
| Wizards Play Network 2011 | 84 | Rare | — | $2.99 |
| Ultimate Masters | 159 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 7 December 2018The ability that defines Boneyard Wurm’s power and toughness works in all zones, not just the battlefield. If Boneyard Wurm is in your graveyard, it will count itself.