His end goal is no less than the complete destruction of humanity. He would not be easily overpowered, at home he is drawing upon aether, the very life of our world, to make himself stronger. I have no doubt he would attempt to do the same here if given the chance. As I highly doubt he would be interested in being seduced.
If your gains include turning all of us into mindless shells of our former selves then I suppose you could use it for your own gain.