Bog-Gorag the Blind

Eye of Gruumsh. Each creature of Bog-Gorag's choice that is within 120 feet of him and aware of him must succeed on a DC 16 Wisdom saving throw or become Shaken for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to Bog-Gorag's Eye of Gruumsh for the next 24 hours.

Legendary Resistance (3/Day). If Bog-Gorag fails a saving throw, he can choose to succeed instead.

Magic Weapons. Bog-Gorag's weapon attacks are magical.

Unbound from Time. Bog-Gorag has advantage on saving throws against being grappled, shoved or knocked prone, and is immune to the effects of spells that restrict movement.

Innate Spellcasting. Bog-Gorag's nonmagical attunement to the universe has given him the ability to affect his and others place in time, giving him access to the following innate spells with WIS as his spellcasting Modifier:

Hold Person (3/Day)

Time Stop (1/Day)

Haste (At Will)

Multiattack. When Bog-Gorag takes the attack action, he makes 2 unarmed strikes, or 1 Soul Strike.

Unarmed Strike. Melee Weapon Attack: +14 to hit, reach 5 ft., 1 target. Hit:  23 (2d12 + 9) thunder damage. 

Soul Strike (Recharge 5-6). Melee Weapon Attack: +14 to hit, reach 5 ft., 1 target. Hit:  21 (2d10 + 9) Thunder damage. On a successful hit, the target must make a Wisdom saving throw (DC 19) or be temporarily separated from their material form. On a failed save, the target is stunned and takes an addition 6d8 (30) Psychic Damage. 

Bog-Gorag can take 4 legendary reactions, choosing from the options below. Only one legendary reaction option can be used at a time and only in a response to a creature's action. Bog-Gorag regains spent legendary reactions at the start of his turn.

Temporal Avoidance. If an area of effect spell would cause Bog-Gorag to make a saving throw, he can instead immediately move up to 15 ft. in any direction.

Temporal Flicker. Bog-Gorag imposes disadvantage on all melee attacks until the end of the current turn.

Temporal Return. When missed by a ranged weapon attack, Bog-Gorag can return the projectile to sender with a thrown weapon attack.  

Temporal Retaliation (Costs 2 reactions). When hit by a melee attack, Bog-Gorag can immediately teleport behind the attacker and take the attack action with advantage on the attacker. 

Bog-Gorag can take 2 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. Bog-Gorag regains spent legendary actions at the start of his turn.

Temporal Shift. Bog-Gorag can immediately move up to half his movement in any direction without provoking opportunity attacks. 

Unarmed Strike. Bog-Gorag makes an unarmed strike attack.

Time Mastery (Costs 2 actions). Bog-Gorag shifts forward in time, leaving the battlefield until the start of his next turn. He gains temporary hit points equal to the damage he has taken since his last turn.