Rebirth in Another World, Awakening All Magic

[Rebirth+System+Magic+Multiverse] Du Ming is a reborn person. He was reborn into a different world like the Earth. However, this world is more than a hundred times larger than the Earth. A hundred years ago, this world was invaded by alien races. ... Space rifts appear all over the world, and many powerful creatures emerge from them. The other world was invaded by aliens from all races, and powerful beings awakening magic appeared among humans. In the past hundred years, mankind has lost a large area of ​​land and only held the last three continents. ..... "If I awaken all the magic, fuse it and throw it out, wouldn't it be a 'nuclear bomb'?" Du Ming thought this method was feasible. The demon clan and the beast clan never thought that their army would be completely wiped out by that man's blow. As long as I kill a lot, I can also summon monsters. Who is afraid of me?