Everyone: Changed to a God-Level Profession, Mastered Both Spells and Swordsmanship

[Sweet article + no hiding of strength + everyone + maid + job transfer + decisive killing + invincibility + assassin + summoning + shadow army] The game and reality merge with each other, with countless portals and copies appearing randomly around the world. Humanity has entered the era of job transfer for all people. Only by becoming job transferees can we stand on top of the world. The male protagonist obtained a god-level hidden profession, the Shadow King, through time travel. I thought it was a summoning mage profession, but I didn't expect that it also has the skills of an assassin! And his shadow summons are immortal and can be infinitely upgraded! You can also be reborn infinitely! And the damage you take will be transferred to the summoned object! As long as there is a summoned object, he is immortal! From then on, he went further and further on the road to ultimate output! What? Is it necessary to form a team of 16 people to conquer the nightmare level dungeon? I alone am enough! Do you think I'm just a person? Sorry, I have hundreds of millions of Shadow Legions, and all of them are at full level! All dungeon bosses have become my shadow summons! Do you think I am a summoner? Sorry, I'm actually an assassin too! Even more so, the master of the shadow world!