uncommon ce large aberration seugathi 

Perception +17; darkvision, tremorsense 30 feet

Languages Aklo, Undercommon; telepathy 100 feet

Skills Acrobatics +19, Arcana +19, Crafting +19, Deception +20, Intimidation +18, Nature +17, Occultism +19, Stealth +19

Str +4 Dex +6 Con +3 Int +4 Wis +2 Cha +5

Items +1 battle axe

AC  27; Fort +18, Ref +21, Will +15; +1 status to all saves vs. magic

HP 120; Immunities mental, poison; Resistances bludgeoning 10

Mindfog Aura (enchantment, mental) 20 feet. As seugathi servant, but DC 25.

Command Confusion [R] Trigger A creature fails its save against the seugathi's mindfog aura; Effect As seugathi servant, but DC 25.

Speed 25 feet

Melee [>] bite +19 (agile, finesse), Damage 2d6+8 piercing plus 1d10 chaotic plus seugathi venom

Melee [>] battle axe +18 (magical, sweep, reach 10 feet), Damage 1d8+8 bludgeoning plus 1d10 chaotic

Occult Innate Spells DC 28, attack +20; 5th black tentacles, crushing despair, hallucination, synesthesia; 4th confusion (×3), phantasmal killer, suggestion; 3rd hypercognition (×3), levitate (×3), mind reading (×3); Cantrips (5th) daze, detect magic, mage hand, telekinetic projectile

Envenom Weapon [>] (manipulate) The seugathi applies their seugathi venom to one weapon they wield.

Magic Item Mastery A seugathi can Cast a Spell from a magic item even if the spell isn't on their spell list. All such spells are occult spells and use the seugathi's innate spell DC and attack modifier.

Seugathi Venom (poison) As seugathi servant, but DC 25.

Warp Reality [>>>] (concentrate, occult, transmutation) The seugathi bends reality in their choice of a 10-foot emanation or a 60-foot line, altering the terrain of the area. The terrain becomes a different type of terrain (such as aquatic, arctic, or desert) and becomes normal or difficult terrain, as the seugathi chooses. Structures, general geographic features, and creatures in the area aren't transformed, but creatures in the area take 5d6 chaotic damage (DC 28 basic Fortitude save) as reality tries to bend them along with the terrain. Though changes to the area are permanent, the natural environment might eventually revert the land back to its original state (aquatic areas drain, arctic areas thaw, and so on).

Abomination Vaults #2: Hands of the Devil, page 83.