Antheantrix Nemenx

Whispering Aura. At the start of each of Antheantrix's turns, each creature of its choice within 10 feet of it must succeed on a DC 15 Wisdom saving throw or take 10 (3d6) psychic damage, provided Antheantrix isn’t incapacitated.

Legendary Resistance (3/day). If Antheantrix fails a saving
throw, he can choose to succeed instead.

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

Multiattack. Antheantrix makes two attacks.

Longsword. Melee Weapon Attack:(+9) reach 5 ft., one target. Hit:9(1d8+5)slashing damage or 13(2d8+5)slashing damage 

Touch of Distress. Melee Spell Attack:(+6) reach 5 ft., one target. Hit:14(3d6 + 5)psychic damage 

Nightmare Breath (Recharge 6). Antheantrix exhales Shadow in a 20-foot cone. Each creature in that area must make a DC14 Wisdom saving throw, taking 40(4d10+20) psychic damage and is paralyzed until the end of their next turn on a failed save, or half as much damage and isn't paralyzed on a successful one.

Spellcasting. The warlock casts one of the following spells, using Charisma as the spellcasting ability (spell save DC 15):

At will: detect magic, guidance, levitate,mage hand, minor illusion, prestidigitation, speak with dead

1/day each: arcane gate, detect thoughts, true seeing,Banishment

Regenerate. Antheantrix Regains 10(1d10+5) hit points.

Shield Expert. Antheantrix adds his proficieny bonus (+5) to his AC until the end of the turn.

Longsword Attack. Antheantrix makes a longsword attack.(+9) reach 5 ft., one target. Hit:9(1d8+5)slashing damage or 13(2d8+5)slashing damage 

Detect. Antheantrix makes a Wisdom (Perception) check.

Frightful Presence. Each creature of Antheantrix's choice that is within 120 feet of Antheantrix and aware of him must succeed on a DC 14 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on a successful save. If a creature's saving throw is successful or the effect ends for it, the creature is immune to Antheantrix's frightful presence for 24 hours