unique ce large beast 

Female lamia matriarch

Perception +29; darkvision

Skills Athletics +33, Crafting +31 (+35 for poison), Deception +32, Intimidation +30, Occultism +29, Stealth +33

Str +9 Dex +7 Con +3 Int +3 Wis +3 Cha +6

Items +2 corrosive greater striking dagger, nightmare salt poison (2), oblivion essence poison, weeping midnight poison (3)

AC  41; Fort +27, Ref +33, Will +29

HP 340; Immunities controlled, poison; Resistances mental 15

Speed 40 feet, climb 40 feet, fly 40 feet, swim 40 feet

Melee [>] corrosive dagger +37 (agile, magical, versatile s), Damage 3d4+17 piercing plus 1d6 acid

Occult Innate Spells DC 40; 9th charm (×3), nondetection, suggestion (×3); 8th sleep; 6th illusory disguise (at will), illusory object (at will), mirror image, ventriloquism (at will); Constant (4th) fly

Change Shape [>] (concentrate, occult, polymorph, transmutation) The lamia matriarch can take on the appearance of a Medium humanoid. This doesn't change their Speed or their attack and damage modifiers with their Strikes, but it does prevent them from using their cursed touch. Each lamia matriarch has a fixed humanoid form—they cannot adopt a different appearance each time they use this ability, and the appearance resembles that of their upper torso when in their true form.

Quick Dervish Strike [>>] Semakraex makes a dagger attack against each enemy within reach. Each attack counts toward her multiple attack penalty, but the penalty does not increase until after all the attacks. The first enemy she damages is subject to matriarch's caress.

Matriarch's Caress [>>] (curse, enchantment, mental, occult) Semakraex touches a creature, who must succeed at a DC 40 Will save or become stupefied 1 (or stupefied 2 on a critical failure). If the target fails additional saves against this ability, the condition value increases by 1 (or 2 if it critically fails; to a maximum of stupefied 4). This condition value decreases by 1 every 24 hours.

Poison Weapon [>] (manipulate) Semakraex applies a poison to a piercing or slashing weapon of her choice.

Age of Ashes #5: Against the Scarlet Triad, page 47.