Akiva

Angelic Weapons. Akiva's weapon attacks are magical. When Akiva hits with any weapon, the weapon deals an extra 5d8 radiant damage (included in the attack).

Divine Awareness. Akiva knows if She hears a lie. Has a Zone of Truth centered on Her at all times. 

Innate Spellcasting. Akiva's spellcasting ability is Wisdom (spell save DC 20). Akiva can innately cast the following spells, requiring no material components, at will:

Mind Sliver, Tasha's Mind Whip, Mind Spike, Synaptic Static, Feeblemind, Suggestion, Command, Friends, Message, Charm Person, Phantasmal Force, Phantasmal Killer, Cause Fear, Enemies Abound, Fear, Dream, Mental Prison, Mirror Image, Major Image

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

Multiattack. Akiva makes three attacks per action. She forms weapons or body parts from Energy. 

Teeth Melee Weapon Attack: +14 to hit, reach 10 ft., one target. Hit: 19 (2d10 + 8) piercing damage plus 7 (2d6) radiant damage.

Sword Melee Weapon Attack: +14 to hit, reach 5 ft., one target. Hit: 15 (2d6 + 8) slashing damage.

Tentacle Melee Weapon Attack: +14 to hit, reach 15 ft., one target. Hit: 17 (2d8 + 8) bludgeoning damage.

Healing Touch (4/Day). Akiva touches another creature. The target magically regains 30 (6d8 + 3) hit points and is freed from any curse, disease, poison, blindness, or deafness.

Keen Sight. Advantage on Wisdom (Perception) checks that rely on Sight.

Evasion.  When subjected to an effect that allows Her to make a Dexterity saving throw to take only half damage, She instead takes no damage if She succeeds on the saving throw, and only half damage if She fails.

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

Psychic Can cast any Psychic based spell as a Bonus Action

Uncanny dodge. When an attacker that She can see hits with an attack, She can use Her reaction to halve the attack’s damage against it.

Switch (Recharge 5-6). when She is hit by an attack she may teleport to switch places with another creature within 30 ft of it which is not the attacker. That creature is hit by the attack instead. 

 Psychic Scream  Akiva may Scream if hit or greatly annoyed. All creatures need to make a DC 17 Wisdom saving throw, on a failed save the creature takes 18 (6d6) psychic damage and are stunned until the end of their next turn. On a successful save they take half as much damage and aren't stunned.

Can take 3 legendary actions, choosing from the options below. .

Detect. Makes a Wisdom (Perception) check at Advantage.

Harmonious Chorus: Celestial voices fill the lair, healing allies within earshot for a small amount of hit points.  

Discordant Wail: A deafening shriek echoes through the lair, causing creatures to make a Constitution saving throw or be deafened for a short time. 

Sonic Blast: A focused blast of sound disrupts spellcasting, forcing spellcasters to make a concentration check to maintain their spells. 

Calm Emotions - Any being within a 2 mile radius will feel calm, content, and sleep very soundly and safely. (Save verses her CHA.)