Cheapest priced copy (The Lost Caverns of Ixalan): $0.35 at Card Kingdom, near mint, their price list as of .
Deconstruction Hammer 
Artifact — Equipment · Common · The Lost Caverns of Ixalan · #9
Equipped creature gets +1/+1 and has "{3}, {T}, Sacrifice Deconstruction Hammer: Destroy target artifact or enchantment."
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Lost Caverns of Ixalan | 9 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 10 November 2023If Deconstruction Hammer somehow ends up attached to a creature controlled by a different player, that player won't be able to activate the granted ability, as they can't pay the cost of sacrificing Deconstruction Hammer, a permanent they don't control.