You have a physical immunity to an element. When you receive this mutation, roll 1D10:
1-4: You are immune to radioactivity, such as alpha, beta and gamma radiation.
5-6: You can breathe toxic fumes without becoming poisoned. You still cannot survive without oxygen, so the gas cannot have completely displaced all the oxygen for you to breathe.
7-8: Your body has a supernatural immune system that can handle any pathogen. You cannot become diseased.
9: Roll twice on this list (re-roll any further 9s).
0: Electricity. Your skin does not conduct electricity at all. Electric shock can not stun you nor can high voltage hurt you. Current flows over your skin and grounds through your feet.