
Vertical investment
Currently my teams are:
E2S1 Phainon, E1S1 Cerydra, E0S1 Sunday, E2S1 Bronya
E2 SW999, E0S0 Yao Guang, E6 EMC, E1S0 Huohuo
E1S0 Archer, E0S1 Rin, E0S0 Sparkle, E0S1 DHPT
I am definitely getting pearl for my Elation team, but in 4.5 should I invest in SP Robin or Ashveil signature for my Archer?
Would SP Robin extend my Phainon lifespan despite not having Cyrene?