which champions are the best for 1vs1?(CS 100 OR FIRST BLOOD OR FIRST TOWER)

Hello guys,I need some help because tomorrow I will play 1vs1 tournament and i dont know which champion I should pick the last time that I played 1vs1 tournament the main role was adc.The adc was pretty strong like lucian and cait was very strong but let me know your suggestions for champions and game style thanks.
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