Is there a way to create the "Mehrune's Razor" effect from "The Elder Scrolls" in 4e?
The original effect was something like this: on hit a roll of a natural 20 the target instantly dies, there is no save. Only a natural 20 roll triggers the effect, and no other power or effect increases the chances of an instant kill while using the blade. If a natural 20 is not rolled, the weapon does damage like a weapon of it's type (e.g. dagger, sword, axe, etc)
I would have used the term
Vorpal, but 4e now has a completely different effect for the
Vorpal concept, which I think nerfs the vorpal blade into near uselessness.