hmm...i have 2 problems with my thunder team
1) lack of debuff 2) lack of healer
so i've thought to use mordred to cover for the debuff part and maybe give her extra skill that will regenerate a little HP+yggsrdrasil i may be able to have regeneration during the whole battle, though it'll give just a small amount of HP.
and trying to get her stunned so tyr can finish her off, hopefully i can beat her before she crush me :O