She's immune to all elemental types, has self cleansing, counter ability, shield, and special mechanic inspired by HI3 Bleed mechanic where HP is continuously drained. This fight forces you to actually use Physical dmg, dodge, and plan out your teams
High Atk but lower hp count
High Atk but lower hp count
Comments
In all 3 phases, she's still immune to all elemental dmg. However in phase 3, Cecilia's physical resistance is lowered IF you successfully fulfill the requirements in Phase 2
You really need a healer against Cecilia since Bleed stacks up.
To spot the real Cecilia in the mind scape, Lukas will aid you in battle to identify her by surrounding her with glowing purple butterflies. All taunts have butterflies, you really need to find the glowing purple ones.
Worry not, she's actually nerfed after the Archon Quest for this area. Your main objective is to survive rather than defeat her in the AQ.