Your own magic systems?

[The Assassin In Red Oh/no]

OK, a random idea I had while in Physical Science. This would be impossible to fit into a book or something because of how complicated it would be, but what if it was like Avatar: The Last Airbender, except with every modern element? It would have a very modern setting. People who can bend metalloids would be walking EMPs because of how much metalloids are used in circuit boards and other technologies. People who can bend iron can also bend trace amounts, so blood-bending would kind of exist. Maybe to make it not way too overpowered they can't bend heteronuclear compounds without a certain amount of training.