Aginor- Nightmare Lord

Aura of Despair. Aginor radiates a malign aura in a 10’ radius that causes enemies to take a –2 penalty on saves. 

Devil's Sight. Magical darkness doesn't impede Aginor's darkvision.

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

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

Regeneration. Aginor regains 15 hit points at the start of his turn. If she takes radiant damage, this trait doesn't function at the start of her next turn. Zariel dies only if she starts her turn with 0 hit points and doesn't regenerate.

Innate Spellcasting. Aginor's innate spellcasting ability is Charisma (spell save DC 26). He can innately cast the following spells, requiring no material components:
At will: dispel magic, detect evil and good, bestow curse, invisibility (self only), blight   3/day each: blade barrier, dispel evil and good, earthquake, harm, resurrection             1/day each: Imprisonment, power word stun, greater restoration, weird

(Use at your own risk) Spellcasting. The Nightmare Lord is a 18th-level spellcaster. Its spellcasting ability is charisma (spell save DC 26, +18 to hit with spell attacks). He casts these spells innately not requiring material components. Aginor has the following Cleric spells prepared:

Cantrips (at will):Guidance, Light, Resistance, Sacred Flame, Spare the Dying, Thaumaturgy                                                                                                                                     1st level (4 slots): Bane, Command, Guiding Bolt, Cure Wounds, Inflict Wounds, Shield of Faith                                                                                                                                                   2nd Level (3 slots): Aid, Hold Person, Lesser Restoration, Silence, Warding Bond              3rd level (3 slots): Dispel Magic, Mass Healing Word, Protection from Energy, Remove Curse Revivify, Spirit Guardians                                                                                                     4th level (3 slots): Death Ward, Freedom of Movement, Locate Creature                             5th level (2 slots): Commune, Flame Strike, Greater Restoration, Mass Cure Wounds        6th level (2 slots): Blade Barrier, Harm, Heal, True Seeing                                                         7th level (1 slot): Etherealness, Fire Storm, Regenerate, Resurrection,                                  8th level (1 slot): Antimagic Field, Earthquake, UnHoly Aura                                                    9th level (1 slot): Astral Projection, Gate, True Resurrection, Storm of Vengeance

Multiattack. Aginor makes 3 attacks with Exitium (using unholy smite if available).

Exitium. Melee Weapon Attack: +21 to hit, reach 10 ft., 1 target. Hit: 27 (4d6 + 13) slashing damage plus. Hit points lost to this weapon can only be regained through a long or short rest, not by magic, regeneration or any other means. When a target is hit it is afflicted by wounding , at the start of each of the wounded creature's turns, it takes 1d4 necrotic damage for each time you've wounded it, and it can then make a DC 22 Constitution saving throw, ending the effect of all such wounds on itself on a success. Alternatively, the wounded creature, or a creature within 5 feet of it, can use an action to make a DC 22 Wisdom (Medicine) check, ending the effect of such wounds on it on a success.

Unholy Smite (Recharge 5-6). Using Exitium or some other weapon Aginor smites a creature, this action fails if the creature has an evil alignment. When Aginor smites a creature he make a melee weapon attack against the creature. This attack does an extra 50 (10d8) necrotic damage and on failed DC 24 constitution saving throw the target is also stunned for one minute. The target may make the saving throw at the end of each of its turns to cure the stunned conditions.

Protective Aura. Aginor can exude a protective aura against good creatures. Against attacks and spells made by such creatures enemies have a +4 to AC and saving throws to anyone within 20' of Aginor. Otherwise it functions as Magic Circle against good creatures rather than a type of creature and Globe of Invulnerability both of these have a range of 20'. This aura can be dispelled but Aginor may recast it again as a bonus action on his next turn. 

Aginor can make 2 reactions per round but only 1 per turn.

Devastating Ripost (Recharge 4-6). When an attack is made or spell is cast against Aginor, he can attempt to counteract it. Against melee attacks Aginor attempts a parry to the attack, Aginor must make a strength check (DC 10 + the attackers proficiency and strength bonus), on a succes the attack fails and Aginor may make an attack against the attacker.

If Aginor is the target of a spell he may attempt to counterspell it as well. If the spell is 3rd level or lower, it fails and has no effect. If the spell is 4th level or higher, Aginor makes an Intelligence check (DC 10 + the spell's level). On a success, the spell fails and has no effect. Whatever the spell's level, the caster takes 10 (3d6) psychic damage if the spell fails.

The Nightmare Lord 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. Aginor regains spent legendary actions at the start of his turn.

Teleport. The solar magically teleports, along with any equipment it is wearing or carrying, up to 120 feet to an unoccupied space it can see.

Crippling Gaze (Costs 2 Actions). The Nightmare Lord targets one creature it can see within 30 feet of it. If the target can see it, it falla prone and is afflicted by wounding. When a target is hit it is afflicted by wounding , at the start of each of the wounded creature's turns, it takes 1d4 necrotic damage for each time you've wounded it, and it can then make a DC 22 Constitution saving throw, ending the effect of all such wounds on itself on a success. Alternatively, the wounded creature, or a creature within 5 feet of it, can use an action to make a DC 22 Wisdom (Medicine) check, ending the effect of such wounds on it on a success.

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