Jagged Edge (3.5e Feat)
From D&D Wiki
You shape your weapons to leave vicious wounds on your foes.
Prerequisite: Shape bone Class feature, 12 Con
Benefit: A successful strike with a weapon you shape leaves behind a vicious bleeding wound that deals 5 point of damage per round to the target. The wounded target must either recieve magical healing or a succeesful DC 16 (+1 per wound after the first) Heal check to stop the bleeding . Multiple hits stack with each other. Regeration or fast healing of 6 or more automaticly heals the wounds
Special: You may take one standard action to activate or deactivate this effect on your weapon.