Unless the mace has hurt ghosts, I can't see it touching him. The Immortal Weapons mini established his mist form puts him on an even level with a spirit army, so he's probably supernatural in nature.
Funnily enough (if barely related) Danny had to fight a king of hell who was likewise untouchable as a ghost. So, Danny's "ally" basically tricked him into taking a spear from behind to kill him.
Lead to a neat feat where the wizard-warrior runs from deceased Danny by crossing over to the land of the living, and he actually manages to use the Iron Fist to temporarily self resurrect from ghost form to flesh and blood.
__________________ What CDTM believes;
Never let anyone else define you. Don't be a jerk just to be a jerk, but if you are expressing your true inner feelings and beliefs, or at least trying to express that inner child, and everyone gets pissed off about it, never NEVER apologize for it. Let them think what they want, let them define you in their narrow little minds while they suppress every last piece of them just to keep a friend that never liked them for themselves in the first place.
Lets see... The basic concept is Danny has to protect some random woman who happens to be an avatar for a univerlsal entity (And she looks like Jean Grey). The King of Hell wants her to take over the universe. He also looks like genghis khan or something.
The woman has a protector, a bowman, who's revealed to be Lancelot by the end of the story. He's the one who killed Danny, so he could fight the hell king.
Danny's also constantly fighting a masked woman, who's just as good at martial.arts as Danny. And we learn happens to be his deceased mother turned into brainwashed bodyguard.
Plus there's other weird stuff like Danny fighting a mob in his city after they kill Colleen Wing (One of the thugs looks like Logan. Even says "bub" ), and accidentally killing them all after a big demon attacks from out of nowhere. And Lancelot claims it wasn't an illusion, but would happen if he doesn't beat the hell lord (Because the cosmic entity resets it? Not really made clear.)
Chris Claremont did it as a five part epic in the black and white Deadly Hands of Kung Fu, and it was nothing like the Iron Fist series. He was probably given permission to do whatever he wanted to shore up sales.
__________________ What CDTM believes;
Never let anyone else define you. Don't be a jerk just to be a jerk, but if you are expressing your true inner feelings and beliefs, or at least trying to express that inner child, and everyone gets pissed off about it, never NEVER apologize for it. Let them think what they want, let them define you in their narrow little minds while they suppress every last piece of them just to keep a friend that never liked them for themselves in the first place.