Cheapest priced copy (The Lost Caverns of Ixalan): $0.35 at Card Kingdom, near mint, their price list as of .
Dauntless Dismantler 
Creature — Human Artificer · 1/4 · Uncommon · The List · #LCI-8
Artifacts your opponents control enter tapped.
{X}{X}{W}, Sacrifice this creature: Destroy each artifact with mana value X.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
2 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Lost Caverns of Ixalan | 8 | Uncommon | $0.35 | $0.79 |
| The List | LCI-8 | Uncommon | — | — |
2 rulings from Wizards of the Coast
- 10 November 2023Dauntless Dismantler's last ability destroys only artifacts whose mana values are exactly X.
- 10 November 2023If an artifact an opponent controls enters the battlefield at the same time that Dauntless Dismantler enters the battlefield, Dauntless Dismantler's effect won't apply to that artifact.