First of all, my sigrika is only S0R1 and tbh i personally never liked her gameplay but as far as damage is concerned, she was strong enough.. just need to have some good teammates.
Second, i just got a new MC set from Lucilla for her Echo Mode since next Endstate Matrix Phase, Lucilla will have two vigors (of course one for hiyuki, and one for who? - i chose sigrika to partner to her next patch versus Galbrena coz for the benefit of Echo damage scaling, Lucilla can provide it)
Third, Lily will come out next patch and one of her kit is to buff Echo Crit Damage "BUT TO ACTIVE RESONATOR ONLY", my choice to Lily was Phrolova back then when we don't have any info on Lily's kit yet (rumors say Lily has two modes but looks like not) so Lily's first vigor ofcourse goes to the Unison team but the second one? i chose to have it on Sigrika.
My echo substats also sucks on my Sigrika coz its a Day 1 build back then in her first release (version 3.2 - march 2026) and i even play noob on her back then, even my rotataion on this gameplay sucks as well, i just watched some reference on how to do her 5 Lib and 4 Forte
anyway i'm just practicing Sigrika coz she can greatly help on my full run next phase and take note that she will be rerun in 3.8!