Deconstruction Hammer is a common Artifact — Equipment card from The Lost Caverns of Ixalan (LCI), collector number 9. Current market price: $0.22 (foil $0.26), TCGplayer market prices via Scryfall.
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.)