Deadly

This special ability can only be placed on melee weapons that normally deal nonlethal damage, such as whips and saps. All damage a deadly weapon deals is normal (lethal) damage. A whip (or similar weapon that is not normally able to damage creatures with armor or natural armor bonuses) with this special ability deals damage even to creatures with armor or natural armor. On command, the weapon suppresses this ability until the wielder commands it to resume.