The material below is Open Game Content from a 3PP Source
Javelin of Lightning
Aura faint evocation; CL 5th
Slot none; Price 1,500 gp; Weight 2 lbs.
This javelin becomes a 5d6 lightning bolt when thrown (Reflex DC 14 half). It is consumed in the attack.
Requirements Craft Magic Arms and Armor, lightning bolt; Cost 750 gp