Thanos's Ultimate Battle.
Superman travels to alternate dimension, where in 1 year of our time = 20 years in this dimension. Superman learns to use and master magic by Dr Strange. He also trained in the fields of space travel, time travel, extra-dimensional travel, biochemistry, robotics, computers, synthetic polymers, communications, mutations, transportation, holography, energy generation, spectral analysis and more, with the help of Reed Richards. So with his new knowledge, Superman creates nanomachines and placed them inside of himself, to regulate his bodily functions and increase his solar radiation intake. Batman and wonder Woman train Superman in 127 styles combat. And Brainiac 13 combines himself with Superman to become one being. With the nanomachines inside him, Superman has full control over Brainiac 13's knowlage, tech, and abilities.
Superman has 1 hour of prep.
No IG, CC, or the Heart.
Who wins?