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Xilvireks are the result of the strange evolution that takes place in Zevgavizeb’s Abyssal realm. These fiends resemble their dread demon lord and claim to be living embodiments of the Lord of Reptiles’s snapping jaws.

Recall Knowledge - Fiend (Religion): DC 32
Unspecific Lore: DC 30
Specific Lore: DC 27

Elite | Normal | Weak
Proficiency without Level

Changes from being Weak are marked in red below.
NOTE: The -2 damage penalty to non-strike offensive abilities (-4 if the ability is limited, such as spells) is NOT factored in.

Weak XilvirekCreature 12

Uncommon CE Large Fiend 
Source Pathfinder #154: Siege of the Dinosaurs pg. 84
Perception +23; darkvision, psionic scent (imprecise) 120 feet
Languages Abyssal
Skills Athletics +23, Intimidation +20, Stealth +21, Survival +23
Str +7, Dex +5, Con +6, Int +0, Wis +5, Cha +4
Psionic Scent A xilvirek can sense the presence of creatures with an Intelligence of at least –3. Creatures that have silenced their thoughts through magic or other means can potentially counteract this sense at the GM’s discretion.
AC 32; Fort +24, Ref +19, Will +17
HP 195; Weaknesses good 10, lawful 10
Hypnotic Stench (aura, emotion, enchantment, incapacitation, mental) 30 feet. A creature that begins its turn in the area must succeed at a DC 30 Will save or become fascinated with the xilvirek. If the creature is already fascinated by the xilvirek and fails its save, the creature is compelled to approach the xilvirek and allow itself to be grabbed, which ends the fascination.Attack of Opportunity [reaction]
Speed 40 feet, swim 30 feet
Melee [one-action] jaws +23 [+18/+13] (chaotic, evil, magical), Damage 3d10-2+13 piercingMelee [one-action] claw +25 [+21/+17] (agile, chaotic, evil, magical, reach 10 feet), Damage 2d8-2+13 slashing plus GrabMelee [one-action] tail +23 [+18/+13] (chaotic, evil, magical, reach 15 feet, versatile P), Damage 3d6-2+13 bludgeoning plus KnockdownDivine Innate Spells DC 26 (-4 dmg); 6th teleport (self only); 4th dimension door (at will); 2nd darkness (at will)
Disgorge Bile [two-actions] (acid, inhaled) The xilvirek retches a small pool of debilitating, acrid bile onto itself. All creatures within 30 feet take 4d6 acid damage as they inhale the bile’s noxious fumes (DC 30 basic Fortitude save; on a failure, the creature is sickened 1, or sickened 2 on a critical failure). The xilvirek can’t Disgorge Bile again for 1d4 rounds.Feasting Tentacles The xilvirek has two tentacles on its back that it can use to suck the life from its prey. A creature that starts its turn grabbed by the xilvirek becomes drained 1, and the xilvirek regains 20 HP. The drained value increases by 1 on each subsequent round that the creature starts its turn grabbed, but the xilvirek doesn’t regain additional HP from draining the same creature more than once per day.

Sidebar - Locations Xilvereks on the Material Plane

Despite their origins within Gluttondark, xilvireks have been encountered with increasing frequency in the deepest depths of the Darklands, perhaps as a result of botched summonings by xulgath clerics of Zevgavizeb. Whether by chance or through the intent of their creator, xilvireks have begun to stretch their reach beyond the evolutionary nightmare of the Abyss.