A bloodthirsty tribe.
This primitive looking weapon’s blade is made of stone and seemingly humanoid bone. Its edges are adorned with small needles and teeth and it is covered with colourful feathers. It is often used by tribal warriors, who receive it as a gift after their first successful hunt.
Attacks made with this weapon count as magical. Whenever you inflict damage and the target has ten or less Hit Points left, you suddenly feel like by just pushing yourself a little bit further you can finish them off – you may choose to inflict and additional 1d10 psychic damage to both yourself and your target. Whenever you kill a creature you gain 1d10 temporary Hit Points.
The dark blood magic that powers this weapon prevents it from dealing non-lethal damage, no matter how much you try to not kill your target.