Authority

Authority Incarnate.  The authority bears an intimidating aura as it steps onto the field of battle.  The first time a hostile creature starts its turn within 60 feet of the authority, it must make a DC 15 Charisma saving throw or become frightened of the authority for one minute.  The creature may repeat its saving throw at the end of each of its subsequent turns, ending the effect early on a success.  A creature that succeeds on its saving throw is immune to the effects of Authority Incarnate for 24 hours.

Burning Weapons.  The authority's weapon attacks are magical, and deal an additional 18 (4d8) fire damage on a hit, included in the attacks listed below.

Divine Service.  Upon being summoned into existence, the Authority is magically compelled to complete the task set by its master.  It treats its summoner and their companions as allies, and completes any task set to it by its summoner to the best of its abilities, even if that task will likely result in its death.  If it manages to complete the task that was set forth for it, or at the end of the spell that summoned it, the authority dies, fading into golden dust.

Innate Spellcasting. The authority's spellcasting ability is Charisma (spell save DC 14). The authority can innately cast the following spells, requiring no material components:

At will: command, cure wounds, detect magic, lesser restoration

1/day each: fireball, wall of fire

Multiattack. The authority makes two attacks with its greatsword.

Greatsword. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 12 (2d6 + 5) slashing damage plus 18 (4d8) fire damage.