I haven’t put a lot of thought into it yet but I feel like a mistborn with just brass,pewter, and duralumin could kill most any person, even a full surge binder. If they did what Vin did to Straff by using brass and duralumin to soothe someone’s emotions away to where it feels crushing and then switching to pewter to kill them even if they needed combining pewter and duralumin to obliterate someones head in one punch.