Aspect of Thrint

Pinnacle of Endurance. Thrint automatically succeeds any Constitution saving throw and takes no damage from a successful saving throw and any saving throw always deals half damage on a failed save. On any successful saving throw Thrint takes no damage. 

Discorporation. When Thrint drops to 0 hit points or dies, his body is destroyed but his essence travels back to his domain in the Astral plane, and he is unable to take physical form for a time.

Inscrutable. Thrint is immune to any effect that would sense his emotions or read his thoughts, as well as any divination spell that he refuses. Wisdom (Insight) checks made to ascertain Thrint's intentions or sincerity have disadvantage.

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

Limited Magic Immunity. Unless he wishes to be affected, Thrint is immune to spells of 6th level or lower. He has advantage on saving throws against all other spells and magical effects.

Magic and Mental Weapons. Thrint's weapon attacks are magical and he can't be disarmed and can summon his weapons to him as a free action. His weapon takes the form of an ethereal hammer that deals an extra 27 (5d10) psychic damage with each strike (included in actions). 

Thoughts of Willpower. Any creature that worships Thrint within 1 mile of his aspect's current location gains the following benefits:  

Immunity to all intelligence and constitution saving throw effects, advantage on all saving throws and can't have their mind read unless they are willing. 

Innate spellcasting. Thrint's innate spellcasting ability is Wisdom (DC 27, +19). He can innately cast the following spells, requiring no material components:

At will: Bless, Dispel magic, Guidance, Resistance, Word of radiance (17th level), Calm emotions (7th level), Mind spike (5th level), Modify memory (9th level), Divine word, Plane shift, Astral projection, 

3/day each: Command (8th level), Detect thoughts, Arcane eye, Stone shape, Mental prison, Feeblemind, Mind blank, Shapechange 

1/day each: Silence (9th level), Thunder Step (8th level), Synaptic static (9th level), Invulnerability, Wish (no cost or side effects/detrimental effects to caster) 

Multi Attack. Thrint makes a mind hammer attack and two slam attacks along with casting a spell from his innate spellcasting. 

Slam. Melee Weapon Attack: +19 to hit, reach 10 ft., 1 target. Hit: 16 (2d12 + 9) bludgeoning damage plus 27 (5d10) psychic damage. 

Mind Hammer. Melee Weapon Attack: +19 to hit, reach 15 ft., 1 target. Hit: 45 (8d8 + 9) force damage plus 27 (5d10) psychic damage. 

Thrint 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. Thrint regains spent legendary actions at the start of his turn.

"Grasp the Mind" (Costs 1 Action). Thrint casts Mind spike from their innate spellcasting or Detect thoughts. 

Immovable Will (Costs 2 Actions). Thrint becomes immune to being knocked prone or moved at all against his will until the end of his turn. He also gains a +2 bonus to his AC verse Strength based attacks. 

Mind Maker (Costs 3 Actions). Thrint bombards the minds of all creatures within 120ft of himself. Each creature within range must make a DC 27 Intelligence saving throw with disadvantage or be stunned for 1d4 rounds.