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Cortex Stalker of the Euphoric Veil - AI-generated fantasy Monster

Cortex Stalker of the Euphoric Veil

Scholars argue over whether cortex stalkers are failed ascendants, engineered harvest-beasts, or parasites that learned to wear thought like flesh. What all sources agree on is that their brains are enormous, almost torso-sized, and packed with psionic tissue that becomes more active as the creature nears death. Harvesters prize them because the living cortex does not merely store power. It radiates a euphoric resonance that seems to enhance psionic focus, sharpen concentration, and make hostile thoughts feel distant and slippery. That resonance vanishes quickly after death unless the organ is extracted with specialized equipment at once. In the black markets beneath major cities, a living cortex is worth fortunes, and many factions will risk a massacre for the chance to capture one intact.

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LargeAberration(Psionic aberration)CR 23Typically lawful evil

Cortex Stalker of the Euphoric Veil

aberrationpsioniccontrollerurban horrorliving harvestboss monster
HP346AC19SPD30 ft., fly 30 ft. (hover)CR23InsightPerceptionStealth
STR
20
DEX
14
CON
32
save
INT
26
save
WIS
22
save
CHA
22
save
Magic Resistance. The cortex stalker has advantage on saving throws against spells and other magical effects.
Legendary Resistance (3/Day). If the cortex stalker fails a saving throw, it can choose to succeed instead, three times per day.
Euphoric Field. Creatures that start their turn within 20 feet of the cortex stalker and can perceive it must succeed on a Wisdom saving throw or be distracted by an overwhelming sense of bliss. Until the start of their next turn, their speed is reduced by 10 feet and they cannot take opportunity attacks. A creature that succeeds is immune to this trait until the start of its next turn.
Psionic Saturation. The cortex stalker's psychic damage ignores resistance.
Dying Brilliance. While the cortex stalker has 173 hit points or fewer, its psychic powers intensify. Its spell save DC increases by 1, and the damage of Psionic Lash and Euphoria Bloom increases by 1 damage die each.
Psionic Lash. Melee or Ranged Spell Attack: to hit, reach 5 ft. or range 120 ft., one target. Hit: 27 () psychic damage, and the target must succeed on a Wisdom saving throw or be stunned until the end of the cortex stalker's next turn.
Euphoria Bloom. The cortex stalker emits a surge of narcotic psionic static in a 30-foot radius centered on itself. Each creature of its choice in that area must make a Wisdom saving throw. On a failure, a creature takes 36 () psychic damage and is charmed until the end of its next turn. While charmed this way, the creature is overwhelmed by euphoric bliss, has disadvantage on attack rolls against the cortex stalker, and cannot take reactions. On a success, a creature takes half damage and is not charmed. A creature that fails by 5 or more is also incapacitated until the end of its next turn.
Mental Pincers. The cortex stalker targets one creature it can see within 90 feet. The target must succeed on a Intelligence saving throw or take 45 () psychic damage and be restrained by invisible telekinetic pressure until the end of the cortex stalker's next turn. On a successful save, the target takes half damage and is not restrained.
Backwash of Bliss. When a creature the cortex stalker can see within 30 feet hits it with an attack, the stalker forces that creature to make a Wisdom saving throw. On a failure, the attacker takes 18 () psychic damage and is briefly overwhelmed by ecstatic feedback, losing the ability to take reactions until the start of its next turn.
Gliding Drift. The cortex stalker moves up to half its speed without provoking opportunity attacks.
Neurolock (Costs 2 Actions). One creature the stalker can see within 60 feet must succeed on a Wisdom saving throw or have its speed reduced to 0 until the end of its next turn, as euphoric static locks up its muscles.
Ecstatic Pulse (Costs 3 Actions). The cortex stalker uses Euphoria Bloom.
Cantrips
Innate PsionicsEnchantment— The cortex stalker can innately cast the following spells, requiring no material components. Intelligence is its spellcasting ability (spell save DC 22, +14 to hit with spell attacks).
1st level
Detect ThoughtsDivination— At will: detect thoughts, telekinesis, mage hand
Dominate MonsterEnchantment— 3/day each: dominate monster, feeblemind, wall of force
Power Word StunEvocation— 1/day each: power word stun, power word kill
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