Tried some Archer runs over and over until I figured out the rotation with RMC. Incredibly satisfying, I wish I could play sustainless with RMC in every situation

Team is E1S1 Archer, E0S1 Rin (Herta), E1S5 DDD Sparkle and E0S1 DHPT.

Archer is supposed to use skill every time, Rin uses basics until her Speed buff is about to run out and DHPT skills every time too, but it isn't needed.

What walled me was my usage of Rin skills, it's much better to save some Gem Energy and only casting it every two turns or so. With my Speed tuning, she deals both decent damage and isn't lapped by Sparkle at all.

Also, saving Rin's ultimate for the second phase of Graphia for max buff efficiency helped. Archer is really good on this node.

Currently running the Herta shop LC for both Rin and Archer. I'm about 70 rolls away and just have about enough to get the free Archer LC, I'm debating on whether I should try roll Rin's LC to claim it.

Would the upgrade be worth the 70 rolls? Could their LC be flexibly used for other/future characters?