Sawtooth sabre

The signature weapon of certain assassin cults, the sawtooth sabre is a cruelly efficient weapon. You may use a sawtooth sabre as a Martial Weapon (in which case it functions identically to a longsword). If you have the Exotic Weapon Proficiency (sawtooth sabre) feat, for the purpose of two-weapon fighting you can treat it as a light melee weapon; for all other purposes it is one-handed melee weapon.