Aspect of Yog-Sothoth

Legendary Resistance (5/day). If the Aspect fails a saving throw, she can choose to succeed instead.

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

Omniscient. The Aspect has expertise in all Intelligence, Wisdom, and Charisma checks. In addition; when she rolls a 1 on a d20 for these checks, she can reroll the die.

Regeneration. The Aspect regains 30 hit points at the start of her turn.

Innate Spellcasting. The Aspect’s spellcasting ability is Intelligence (spell save DC 26, +18 to hit with spell attacks). She can innately cast the following spells, requiring no material components:

At will: contact other plane, detect magic, detect thoughts, mind spike (5th level), shield, lightning bolt

3/day each: arcane eye, chain lightning, clairvoyance, scrying, synaptic static

1/day each: befuddlement, feeblemind, foresight (As an action)

Multiattack. The Aspect makes four attacks with Arcane Blast.

Arcane Blast. Ranged Spell Attack: +18 to hit, range 120 ft., one target. Hit: 15 (1d10 + 10) force or psychic damage.

Arcane Cataclysm (Recharges after a Long Rest). The Aspect conjures orbs of magical energy that plummet to the ground at three different points she can see within 1 mile of her. Each creature in a 40-foot-radius sphere centered on each point must make a DC 26 Dexterity saving throw, taking 71 (11d12) force damage on a failed save or half as much damage on a successful one. A creature in the area of more than one arcane burst is affected only once. The area of each arcane burst then acts as an antimagic field for 1 hour. The Aspect and spells she casts are unaffected by these fields.

Teleport. The Aspect teleports to unoccupied space she can see within 60 feet of her.

Pry. The Aspect innately casts either detect thoughts or mind spike (5th level).

The Aspect of Yog-Sothoth 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. The Aspect regains spent legendary actions at the start of her turn.

Attack. The Aspect makes two attacks with her Arcane Blast.

Consume Magic (Costs 2 Actions). The Aspect targets a creature within 120 feet of her who is concentrating on a spell. The target must succeed on a DC 26 Constitution saving throw or its concentration is broken on the spell, and The Aspect gains 5 temporary hit points per level of that spell.

Maddening Secrets (Costs 3 Actions). The Aspect whispers an arcane secret into the mind of a creature she can see within 60 feet of her. The target must succeed on a DC 26 Wisdom saving throw or expend one of its spell slots of 3rd level or lower and deal 26 (4d12) force damage to each creature within 30 feet of it. A creature that fails the saving throw but can’t expend a spell slot is instead stunned until the end of its next turn.