Thus , he could scratch an opponent with a slight flick of the finger , not risk death himself , and cause death easily .
It is said that a serious assassin would coat his fingernail with wax , then apply the poison .
Assassin could scratch an opponent with a slight flick of the finger , not risk death himself , and cause death easily .
It is said that a serious assassin would coat his fingernail with wax , then apply the poison .