The goddess Eir is by many accounts “the best of all physicians.” But scholars differ on the capacity in which she used her power. Some depict her as a goddess of healing, tending to the sick and the war-wounded. Others view her as a horse-riding valkyrie who rides into battles to decide which soldiers die and which live.
Regardless, she is very powerful. And being a healer does not discount her from also being a valkyrie. Some even believe she is a form of Frigg, foremost among Norse goddesses.