If you mix ecstasy with marijuana and smoke it will you die?

yes . you can overdose , over heat , have a heart attack , heart stroke or heart failure , liver failure , not drinking enough fluids or drinking too much can cause death .

The above is wrong in one part. You cannot 'Overdose' on MDMA. its impossible, you can overdose on other drugs which dealers put in so that they make more profit of each pill. get your facts right.