ill take nitrogen
also i dont need carbon
most living things use potassium for there brain so i have control of al your bodily functions
they fire it from neurons
sodium potassium pump won’t matter if you just destroy the hydrocarbon structure of the cell tho
i could make your brain control the elements for me
i control all elements
because i control all
Carbon is literally the best pick
we’ve only had 2 people choose a true useless element
so far, I’m impressed with the community 
plutonium and uranium to make nukes (would go well with explosion mage)
Heavy elements are great just solve the worlds energy crisis.
why bother with nuclear fission when you can have nuclear fusion instead
do both at the same time easy