Thanks for the input, and it actually gave me quite a good insight on which unit to use for that part, went for a run with my Erun and she survived those mages quite well. Based on that video, instead of using Liselotte I used Shuka and also Claire with Spica. Shuka actually helps with her skill to clean the massing mobs just in time to drop Erun to act as lightningrod. Aside that, I'm gonna farm for Solano's revival when it hits Nutaku.