Reborn in S14, crush the entire league!

Chen Xiao was reborn back to S14 when he first joined Top Esports, and he was equipped with the "Strongest Hextech" system. Completing tasks allowed him to draw random Hextech items! At this darkest moment when the Demon King Faker was about to establish a new dynasty, he appeared out of nowhere and relentlessly tormented him. "Is this what you call invincible in lane? Making me invincible during the laning phase?" "A flash that risked your career? A flash that risked your teammates' careers?" "CS champion? The CS champion who developed the i-series?" "You call yourself a four-time champion? I'll beat the four-time champion!"... Chen Xiao swore that he initially only wanted to establish himself in the LPL. How did he inexplicably become the strict father figure to all the players?