Spellcasting. The Rival is a 10th-level spellcaster. Its spellcasting ability is Charisma (spell save DC 14, +6 to hit with spell attacks). It has the following paladin spells prepared:

1st level (4 slots): command, protection from evil and good, thunderous smite

2nd level (3 slots): branding smite, find steed

3rd level (2 slots): blinding smite, dispel magic

Multiattack. The Aasimar Rival makes three attacks with its glaive or its longbow.

Glaive. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 9 (1d10 + 4) slashing damage.

Longbow. Ranged Weapon Attack: +4 to hit, range 150/600 ft., one target. Hit: 8 (1d8 + 3) piercing damage.

Dreadful Shroud (Recharges after a Long Rest). As an action, the Aasimar Rival unleashes the divine energy within, causing their eyes to turn into pools of darkness and two skeletal, ghostly, flightless wings to sprout from their back. The instant they transform, other creatures within 30 feet of them that can see them must each succeed on a Charisma saving throw (DC 14) or become frightened for 1 minute. If a frightened target ends its turn more than 30 feet away from the Aasimar Rival, the target can repeat the saving throw, ending the effect on itself on a success.

The transformation lasts for 1 minute or until ended as a bonus action. During it, once on each of their turns, they can deal extra necrotic damage to one target when they deal damage to it with an attack or a spell. The extra necrotic damage equals 1d6.

Healing Burst As an action, the Rival can regain a number of hit points equal to 2d6. Once they use this trait, they can’t use it again until they finish a long rest.