Red Spider Lily time! I like Red Spider Lily for a foxy and miko style. And she is drawn by Moneti and I love Moneti style. But I never get her or her Miko version. So, paper only.

Stats:
HP: Decent HP. Not the highest but still over 20k and that's enough for her.
ATK: That's a good ATK stat, over 8k. Nothing to complain about.
DEF: A bit low but not that much. Decent again.
She has good average stats for a rainbow. I can't complain on this point.

Skill
x2.8 damages to all, 37% skill act.
Good and very common all target skill for rainbows and better than the x2.9 / 34% actversion of thoses skills. There is no more to say. It's just a nice skill.

Abilities
Meh. Not bad but not good here.

+28% ATK for all
That's nice. Better than the average +20/+22%. It's always good to have to support the team.

+15% ATK x number of enemies for all
That's a good thing. Not the best ability but still usefull to max the damages against some really hard pests group and kill them before they kill you. This ability alone is not that good but with more girls like that, you can reach incredible damages buff. I like it.

x1.2 skill act
Good rand really classic ability. No more to say than "it's good for her and the team etc.". You already know it.

80% Evade turn 1 and 2, 50% after
Evade ability. That's a good one but it seems Evade teams are not that strong now (maybe I'm wrong but Crit or Counter teams seems better now).

And... That's all. But she still need something else. She has not that much abilities and nothing to really shine. They're not bad but... a bit boring. She lacks of something special.

Team Build
As I said, she can go ina team with a lot of ATK buff depending on enemies. It's not the best team archetype but it can be really helpful for some maps with large groups of strong pests like on the lasts Whaleship's 1st part maps.
Or she can have a place on an Evade team. She is not that bad with her ATk buff and her skill act but there is better girls anyway. Not a must have.

Conclusion
She is not bad but she is a bit average everywhere. Actually,she really lacks of a little something to be better. And unfortunatly, her Miko version is slightly better with ATK debuff (I didn't know she has both ATK debuff and Skill act... interesting...

Final verdict:
I really like her for her style but... she is not that good in battle. She deserve C Tier for me. She really REALLY needs another ability to make her better. Not necesary something broken but just something useful. i don't know. Even another attack type would be nice. I think devs overestimate a bit Evasion and don't give enough toys to evade girls (unless thoses girls are called Saffron or Kerria but that's because Devs are crazy).