Aella

Innate Spellcasting. Aella's innate spellcasting ability is Charisma (spell save DC 23, +16 to hit with spell attacks). It can innately cast the following spells, requiring no material components:

At will: mending, prestidigitation, thunder step

1/day each: chain lightning 

2/day each: lightning bolt, lesser restoration, shatter

3/day each: command, compelled duel, thunderous smite, thunderwave

Legendary Resistance (3/Day). If Aella fails a saving throw, she can choose to succeed instead.

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

Raidyn. Aella's returning lightning spear can be thrown up to 80 ft. and deals extra lightning damage on both melee and thrown attacks. The thrown attack deals extra AOE lightning damage to surrounding enemies. 

Multiattack. Aella makes two melee attacks with Raidyn, or one thrown attack. 

Raidyn (spear). Melee Weapon Attack: +15 to hit, reach 5 ft., one target. Hit: 13 (1d6 + 8) piercing damage, or 14 (1d10 + 8) piercing damage when used with two hands, plus 22 (4d10) lightning damage.

Raidyn (spear). Thrown Weapon Attack: +15 to hit, reach 80 ft., one target. Hit: 13 (1d6 + 8) piercing damage. Additionally when thrown, Raidyn, surges with lighting that upon hitting its target, burst outward leaping to all enemies within 30 ft of the target, including the target, dealing  33 (6d10) lightning damage.

Unyielding. When Aella is subjected to an effect that would move her, knock her prone, or both, she can use her reaction to be neither moved nor knocked prone.

Aella can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. Aella regains spent legendary actions at the start of his turn.

Melee Spear Attack. Aella makes one spear attack.

Thrown Spear Attack (Costs 2 Actions). Aella makes one thrown spear attack.

Shimmering Shield (Costs 2 Actions). Aella creates a shimmering, magical field around itself or another creature it can see within 60 feet of it. The target gains a +2 bonus to AC until the end of Aella's next turn.

Frighten Foes (Costs 3 Actions). Aella targets up to five creatures she can see within 30 feet of her. Each target must succeed on a DC 25 Wisdom saving throw or be frightened of her until the end of her next turn. Any target within 5 feet of Aella has disadvantage on the saving throw.