Cheapest priced copy (Innistrad: Double Feature): $0.39 at Card Kingdom, near mint, their price list as of .
Ancient Lumberknot 
Creature — Treefolk · 1/4 · Uncommon · Innistrad: Crimson Vow · #230
Each creature you control with toughness greater than its power assigns combat damage equal to its toughness rather than its power.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.39 to $5.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Innistrad: Double Feature | 497 | Uncommon | $0.39 | $5.99 |
| The List | VOW-230 | Uncommon | $0.49 | — |
| Innistrad: Crimson Vow | 230 | Uncommon | $0.49 | $0.49 |
One ruling from Wizards of the Coast
- 19 November 2021Ancient Lumberknot's ability doesn't actually change any creature's power. It changes only the amount of combat damage the creature assigns. All other rules and effects that check power or toughness use the real values, even if they cause damage “equal to a creature's power” to be dealt.