DC/FATE : Age of Heroes

World War 3 happens, and humanity is deleted from Earth. The last survivor of humanity, A man named Edward Elric gets thrown into DC universe around 1200 BCE with 10 class cards containing the souls of heroic spirits, and a little extra something inside him. Follow him on his journey as he walks through history, and finds his place in this dark universe, becoming a beacon of Hope. This will be dark but with humor and interesting stuff , along with some major character deaths. Mc will be a bit edgy at first, but he'll grow out gradually.  There will be eventual multiverse travel.