Divine Eminence. As a bonus action, the archpriest can expend a spell slot to cause its melee weapon attacks to magically deal an extra 10 (3d6) radiant damage to a target on a hit. This benefit lasts until the end of the turn. If the archpriest expends a spell slot of 2nd level or higher, the extra damage increases by 1d6 for each level above 1st.

Spellcasting. The archpriest is a 18th-level spellcaster. Its spellcasting ability is Wisdom (spell save DC 17, +9 to hit with spell attacks). The archpriest has the following cleric spells prepared:

Cantrips (at will): guidance, light, mending, sacred flame, thaumaturgy

1st level (4 slots): guiding bolt, healing word, sanctuary

2nd level (3 slots): lesser restoration, spiritual weapon

3rd level (3 slots): dispel magic, spirit guardians

4th level (3 slots): death ward, guardian of faith

5th level (3 slots): commune, flame strike

6th level (1 slot): heal, word of recall

7th level (1 slot): resurrection

8th level (1 slot): holy aura

9th level (1 slot): mass heal

Multiattack. The archpriest makes two melee attacks.

Mace. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 3 (1d6) bludgeoning damage.