I just texted this to one of my players and he responded.
"Hmmm. This is interesting. Well, bones are made of calcium. Calcium is a metal....does this mean heat metal works?"
You guys see what I have to put up with?![]()
Also, if it you could heat metal on compounds that contain metal atoms, you could just boil their blood right away. Like Adam X the X-Treme!In 5e you have to see the metal, so, not until you peel off the meat, at which point heating it would be moot in terms of combat effectiveness.