Complex sentence: He reveals himself as Oscar Diggs, a talented circus Magician and the son of a politician who used false magic to create illusions that make it appear as if he truly was a great and powerful force to be reckoned with.
Split into simpler sentences: He reveals himself as Oscar Diggs, a talented circus Magician and the son of a politician. He had used false magic to create illusions that make it appear as if he truly was a great and powerful force to be reckoned with.