The material below is Open Game Content from a 3PP Source
Rapier of Puncturing
Aura strong necromancy; CL 13th
Slot none; Price 50,320 gp; Weight 2 lbs.
Three times per day, this +2 wounding rapier allows the wielder to make a touch attack with the weapon that deals 1d6 points of Constitution damage by draining blood. Creatures immune to critical hits are immune to the Constitution damage dealt by this weapon.
Requirements Craft Magic Arms and Armor, harm; Cost 25,320 gp