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.)
If 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.