Well, Fury has a punching ability of sorts where in his Unbridled State he imbues his martial strikes with additional kinetic power, sort of unconsciously. Dunnaman could probably mimic something like that, maybe through the medium of his mace? He could even have inherited some of Fury's rage mode perhaps, I don't know if the Void or Fury's type of Antireen control is particularly contagious. Does the World Machine have any sentience at all? Could it be pissed off at him?