Arch Nothic

Uncontrolled Magic. The Arch Nothic has Archmage Armor innately, a successful dispel magic will dispel this until it completes a shot rest.

Keen Sight. The Arch Nothic has advantage on Wisdom (Perception) checks that rely on sight.

Multiattack. The nothic makes two claw attacks and uses its Psychic scream if available otherwise it uses Rotting Gaze.

Shocking Claw. Melee Spell Attack: +7 to hit, reach 5 ft., one target. Hit:  7 (1d8 + 3) Slashing damage and 18 (4d8) lightning damage, and it can't take reactions until the start of its next turn.

Rotting Gaze. The nothic targets one creature it can see within 30 feet of it. The target must succeed on a DC 15 Constitution saving throw against this magic or take 28 (8d6) necrotic damage.

Weird Insight. The nothic targets one creature it can see within 60 feet of it. The target must contest its Charisma (Deception) check against the nothic’s Wisdom (Insight) check. If the nothic wins, it magically learns one fact or secret about the target. The target automatically wins if it is immune to being charmed.

Psychic Scream (Recharges on 6). The Arch Nothic unleash the power of its mind to blast the intellect of up to ten creatures of its choice that it can see within range. Creatures that have an Intelligence score of 2 or lower are unaffected.

Each target must make an DC 15 Intelligence saving throw. On a failed save, a target takes 14d6 psychic damage and is Stunned. On a successful save, a target takes half as much damage and isn’t stunned. If a target is killed by this damage, its head explodes, assuming it has one.

A stunned target can make an Intelligence saving throw at the end of each of its turns. On a successful save, the stunning effect ends.

Consume magic. when a creature casts a spell within 60ft the Arch Nothic can attempted to consume the magic instead fueling it's own vitality and power. If the spell cast is 3rd level or lower it instantly succeds in consuming otherwise roll an arcana check vs DC equal to spell level + 10. On a success spell is consumed before it's effects and the Arch Nothic gains 10 times the spells level in HP and to it's maximum HP. On a failure the spell is cast unhindered. The Hit Points maximum returns to normal after a long rest.