ard Elton or Head Thief Leon, Head Bandit Zaza, Frozen Rose Elize and Thunder Cat Parmi.
Extremely small chance of capturing Disciple Mare.
Mare can cast an AoE attack that causes Weak, Injury and Poison her first turn with no damage. She can also cause Curse with any of her attacks.
Mare uses STBB attack called Soul Draining very often.
At 40% Mare casts Nightmare AoE BB that will take out half to a third of your unit's health if not guarding or using DEF increasing item. She will also generously heal herself after the attack.
A team that reduces Dark enemy unit damage or bringing seals is recommended if you do not possess a high damaging team.