What's wrong with plain weed? The tobacco makes good weed taste and smell like crap. Besides, I heard that the nicotine makes otherwise healthy weed into something that causes cancer. What they said was that people that live in New York City breathes pollution equal to a pack to a pack and a half a day, but they don't get cancer at the same rate as smokers who smoke a pack to a pack and a half because their lungs block out most of the harmful chemicals. Nicotine keeps the lungs from being able to block out the harmful cancer causing chemicals.
Some say weed is more harmful than tobacco because of the high resin content, but without the nicotine your lungs block the cancer causing chemicals and they clean themselves right up. So, if you wrap that weed in a tobacco wrapper, your just giving your lungs a bad wrapper.