Premium FUA - Apocalyptic Shadow: Stormwind Knight (Diff 4) 2nd Side [Honkai Star Rail] 

E0S1 Ratio, E1S1 Topaz, E1S1 Robin, E0S1 Aventurine
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There's some RNG and timing concerns when I used this team against Argenti. You want to be able to land your Ratio ult and Topaz skill on Argenti before all the taunts land during 2nd phase so that when the FUA triggers, you're already starting to whittle down his toughness bar during the taunted phase. Getting RNG to align for numby's mark is the big decider.
Overall, pretty comfy clear if you're not score chasing.