Valkyrie

Flyby. The valkyrie doesn’t provoke an opportunity attack when it flies out of an enemy’s reach.

Innate Spellcasting.  The valkyrie's innate spellcasting ability is Charisma (spell save DC 18, +10 to hit with spell attacks). The valkyrie can innately cast the following spells, requiring no material components:

3/day each: compelled duel, guiding bolt (as a 5th-level spell)

1/day each: daylight, sunbeam (as a 6th-level spell)

Magic Resistance. The valkyrie has advantage on saving throws against spells and other magical effects.

Relentless (Recharges after a Short or Long Rest). If the valkyrie takes 21 damage or less that would reduce it to 0 hit points, it is reduced to 1 hit point instead.

Divine Warrior. The valkyrie's weapon attacks deal additional 5d8 radiant damage (already added in the Attack Actions).

Walk among Warriors. The valkyrie has angelic wings that it can choose to fold as a bonus action. Doing so will cause them to disappear. While folded, a valkyrie looks indistinguishable from a (rather beautiful) human woman and she looses her flying speed. The valkyrie can use a bonus action to unfold her wings while they are folded, to regain her flying speed and angelic appearance.

Multiattack. The valkyrie makes two melee attacks.

Longsword. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 10 (1d8 + 6) slashing damage, or 11 (1d10 + 6) slashing damage if used with two hands, plus 22 (5d8) radiant damage.

Longbow. Ranged Weapon Attack: +6 to hit, range 600 ft., one target. Hit: 6 (1d8 + 2) piercing damage, plus 22 (5d8) radiant damage.