how about Liv (the stronger version) ? tried using all lightning and fire/ice. after 3 turns, damage got lower and she just regenerates
i just got quite lucky with her, i unpgraded all cards that possible to upgrade through self-defense classes, then loaded up deck full on electric cards ,sl*t 5 cuz of the damage boost till the end of the fight , s 1 and 6, 1 just to get synergy of electricity when missing one electric card for boost of slots and damage, s 6 cuz of boosting cards which values are over 6,so to boost 7 of electric card