The First Blade

First Blade as drawn by Robbie Thomson "When I pitched I thought it'd be helpful to draw The 1st Blade. Despite this artwork they went for it"

The First Blade is the weapon used by Cain to kill his brother Abel, it was fashioned from the jaw of an animal. The blade is the only thing in existence capable of killing a Knight of Hell, however the blade alone is not able to kill a Knight, the Mark of Cain is necessary for the wielder to bare, as it is the source of power.