Auroravex, the Radiant Guardian (DnD Vault)

Multiattack.
Auroravex makes three attacks: one with its bite and two with its claws.

Bite.
Melee Weapon Attack: +13 to hit, reach 10 ft., one target.
Hit: 21 (2d10 + 7) piercing damage plus 10 (3d6) radiant damage.

Claw.
Melee Weapon Attack: +13 to hit, reach 5 ft., one target.
Hit: 17 (2d8 + 7) slashing damage.

Radiant Breath (Recharge 5–6).
Auroravex exhales a 60-foot cone of radiant energy. Each creature in the area must make a DC 21 Constitution saving throw, taking 63 (14d8) radiant damage on a failed save, or half as much on a success. Undead and fiends automatically fail this saving throw.

Luminous Surge.
Auroravex can unleash a burst of celestial energy, shedding bright light in a 30-foot radius for 1 minute. Allies within this light gain advantage on saving throws against being frightened or charmed.

Blinding Retribution.
When struck by a melee attack, Auroravex can release a flash of radiant light. The attacker must make a DC 19 Constitution saving throw or be blinded until the end of their next turn.