"Mr. Able has recently released into the care of a trusted colleague a very curious and dangerous weapon known as a "Nemesis Blade". The knife shown in the photographs was created by the infamous occultist/scientist Anton Evisser."
The unassuming exterior of the Nemesis Blade storage box.
Given the Slovak origin of the blade I believe this is a regional spelling.
The blade revealed.
The handle appears to be bone (human?), and the markings on the blade look similar to the Widmanstätten patterns found in iron meteorites. I can only guess at the function of the mechanism in the guard.
Another view of the entire blade.
A closer look at the mechanism in the guard.
A clockwork power source? Or something driven by more esoteric energies?
The note from Mr. Able that accompanied the artifact.
Given the destructive potential described above one can hope the blade's powers are in the service of good.