Cornwind Evil posted:

If he really can control electromagnetism fully, he could in theory 1) turn invisible (due to visible light being a type of electromagnetic radiation) 2) phase shift (electromagnetism is what keeps solid objects from passing through one another and thus he could deactivate this and walk through walls or go beyond that and become completely invincible) 3) unleash any kind of laser blasts at his foes (once again, light is electromagnetic radiation, as is everything on this chart, so that's also heat vision, x-ray vision, being his own radio and can scramble any others at his leisure, and producing microwaves, macrowaves, and the deadliest form of radiation on a whim), 4) Create optical illusions via, again, manipulation of light, 5) explicitly control half of physics, all of chemistry (which when boiled down is the study of protons, neutrons, and electrons), and most of biology (which is a combination of chemistry and physics), 6)manipulate valence electrons, in which he can force chemical reactions to occur that are normally impossible or make reactions that normally occur not happen, 7) Manipulate nervous systems to turn people into puppets or kill them by just turning the electrical impulses that govern nervous systems off, 8) Also hijack electronics via a similar method, 9) flash freeze or heat matter by imparting or taking away kinetic energy through protons and electrons 10) transmute anything into any other thing by rearranging particles at the subatomic level, 11) disintegrate anything larger than a nuclear, and there's yet more.