The Murder Sword

Power Sword required.
So deadly are the wounds from this blade that some
believe it is actually the Anathame- it is undoubtedly
of eldritch provenance, for with a sacrificial ritual it
can become the bane of a certain foe above all others.
Change weapon stats to: +1 S, -4 AP, & 1 D
Ability: Nominate a character at the start of the
battle aloud. When the bearer attacks the chosen
foe wounds are inflicted are mortal instead
of normal damage.