Spellcasting. 4th-level cleric. Its spellcasting ability is Wisdom (spell save DC 12, to hit with spell attacks +4)   Cantrips (at will): Thaumaturgy, Druidcraft, Shillelagh, Resistance,   1st level (4 slots): Purify Food and Drink, Bless, Bane, Ray of Sickness, Sanctuary, Cure Wounds,   2nd level (3 slots): Locate Object, Spiritual Weapon,  

Potion of Healing: The healer carries a potion of healing (2d4+2 healing as a action) and a Healer's Kit.   Chosen of Gods: Once per week, as an act of incredible courage can sacrifice himself to protect other. The DM can roll a d20 and add priestess CR to this roll. If the check gets 20 or more the priestess can receive one of the random bonuses: Regain one spell slot of her greater slot available; Maximize the healing of a spell, grant one target resitance/advantage against the next damage/saving throw.