At first glance,this modest looking cloak made of black leather,seems to be the perfect blessing for anyone literally wanting to become someone else.
The price it exacts fom the wearer however,is a fate worse than death..
For a futuristic grim gory setting. Probably powered by some kind of dilithium battery or something similarly awesome. Anyways, basicly a big drill sticking up from a hilt that you primarily use for skewering enemies painfully and drilling through armor.