Link allies in certain area together , linked Battle Girls reduce %damage and balance HP in certain time.
Inject anesthetic to an ally , and immune to damage during anesthetic time. Count HP after anesthetic time.
When Battle Girls from both sides get hurt , Nurse collects and stores part of HP. When stored HP is full , Nurse will give it to ally with lowest HP.
Leave a mark to ally with lowest HP , when other allies get healed , marked ally will receive certain proportion of recovered HP.