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Cortex-Beast of the Euphoric Null - AI-generated fantasy Monster

Cortex-Beast of the Euphoric Null

Cortex-beasts are whispered about in psionic black markets as living vaults of stolen brilliance. Their torso-sized brains are not merely organs, but conductive theaters where thoughts are refined into weaponized ecstasy. The closer one comes to killing the creature, the more violently its inner light blooms, and the more valuable its cortex becomes to psionic practitioners. Harvesters prize the living extraction because the lingering euphoric resonance can be integrated into a mind-bond or focus chamber, amplifying psionic power far beyond what a dead, dulled organ can offer.

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LargeAberration(Psionic aberration)CR CR 23typically neutral evil

Cortex-Beast of the Euphoric Null

aberrationpsioniccontrollerurbanlegendarybossharvestable
HP378AC20SPD40 ft., climb 30 ft., fly 30 ft. (hover)CRCR 23ArcanaInsightPerceptionStealth
STR
24
DEX
16
CON
28
save
INT
23
save
WIS
21
save
CHA
22
save
Magic Resistance. The cortex-beast has advantage on saving throws against spells and other magical effects.
Flaring Cortex. Whenever the cortex-beast takes damage, it gains 5 temporary hit points if it is below 100 hit points. This effect can occur only once per round.
Death-Glowing Psionics. If the cortex-beast is at 100 hit points or fewer, its psychic damage rolls deal an extra 7 damage, and creatures have disadvantage on saving throws against its Euphoria Static if they are within 20 feet of it.
Impossible Anatomy. The cortex-beast can move through a space as narrow as 1 inch wide without squeezing, provided its torso-sized brain can pass through with it and it is not wearing bindings or restraints that prevent this.
Telepathic Awareness. The cortex-beast can communicate telepathically with any creature it can see within 120 feet, and it can sense the presence of active psionic minds within that range unless blocked by lead or similar psychic shielding.
Mind-Lance Claw. Melee Weapon Attack: to hit, reach 10 ft., one target. Hit: 18 () psychic damage, and the target must succeed on a Wisdom saving throw or be stunned until the end of its next turn.
Euphoria Bolt. Ranged Spell Attack: to hit, range 120 ft., one target. Hit: 32 () psychic damage, and the target must succeed on a Constitution saving throw or have disadvantage on concentration checks and saving throws against being charmed until the end of its next turn.
Euphoria Static. The cortex-beast emits a surge of ecstatic psionic static. Each creature of its choice within 30 feet that can hear or perceive it must make a Wisdom saving throw. On a failure, a creature takes 27 () psychic damage, is incapacitated until the start of the cortex-beast's next turn, and feels an overwhelming bliss that prevents it from taking reactions for 1 minute. On a success, a creature takes half damage and suffers no additional effect. A creature that succeeds is immune to this creature's Euphoria Static for 24 hours.
Fractured Bliss. When a creature the cortex-beast can see hits it with an attack, it imposes disadvantage on that attack roll if the attacker is within 60 feet and the beast is not incapacitated. If the attack misses, the attacker must succeed on a Wisdom saving throw or be charmed by the beast until the end of its next turn, dazed by an intrusive wave of exhilaration.
Psychic Rebuttal. The cortex-beast halves the damage from one attack that would hit it. It must be able to see the attacker.
Telekinetic Shove (Costs 2 Actions). The cortex-beast telekinetically moves one Large or smaller creature or unattended object it can see within 60 feet up to 20 feet in any direction. The target must be unoccupied space and the move cannot exceed vertical or horizontal limits the DM considers reasonable.
Mind Nudge. The cortex-beast forces one creature it can see within 60 feet to make a Wisdom saving throw or take 13 () psychic damage and subtract from the next attack roll or saving throw it makes before the end of its next turn.
Euphoric Burst (Costs 3 Actions). The cortex-beast uses Euphoria Static.
Cantrips
Innate PsionicsEnchantment— The cortex-beast can innately cast the following spells without material components, using Intelligence as its spellcasting ability (spell save DC 23, +14 to hit with spell attacks):
At WillEnchantment— At will: detect thoughts, levitate, mage hand, minor illusion
3/Day EachEnchantment— 3/day each: dominate monster, telekinesis, synaptic static, mass suggestion
1/Day EachEnchantment— 1/day each: feeblemind, power word stun, mind blank
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