The richly robed being before you has reptilian claws and a forest of snakes where its head should be- but the eyes of those snakes gleam with a malevolent intelligence.

Lernaeati (CR 8; XP 4,800)
LE Medium outsider (evil, extraplanar)
Init +5; Senses darkvision 60 ft.; Perception +14
AC 22, touch 15, flat-footed 17
(+5 Dex, +7 natural)
hp 105 (10d10+50)
Fort +8, Ref +12, Will +8
DR 5/good; Defensive Abilities vigilance; SR 19
Speed 40 ft.
Melee 6 bites +11 (1d4+3 plus poison), 2 claws +11 (1d6+3)
Special Attacks infectious claws
Spells Known (CL 7th; concentration +10)
3rd (5/day)—hold person (W-DC 17), summon monster III
2nd (7/day)—glitterdust (W-DC 16), summon monster II, web (R-DC 16)
1st (7/day)—charm person (W-DC 14), grease, mage armor, magic missile, summon monster I
0th (at-will)—acid splash, detect magic, ghost sound (W-DC 13), haunted fey aspect, message, spark, touch of fatigue
Str 16, Dex 20, Con 20, Int 18, Wis 12, Cha 16
Base Atk +8; CMB +11; CMD 26
Feats Augment Summoning, Combat Reflexes, Eschew MaterialsB, Silent Spell, Spell Focus (conjuration), Spell Penetration
Skills Bluff +16, Diplomacy +16, Linguistics +17, Knowledge (arcana) +17, Knowledge (planes) +17, Perception +14, Sense Motive +14, Spellcraft +17, Stealth +18, Use Magic Device +16
Languages Abyssal, Aklo, Common, Draconic, Infernal, up to 10 additional languages
Environment desert, plains, planes (Realms Beyond), ruins
Organization solitary or clutch (2-7)
Treasure standard
Special Abilities
Infectious Claws (Ex) Wounds inflicted by the lernaeati’s claw attacks cannot be healed by magic. They will heal naturally over time.
Poison (Ex) Bite—injury; save DC 20; frequency 1/round for 4 rounds; effect 1d2 Dex; cure 1 save.
Spells Lernaeati cast spells as 7th level sorcerers.
Vigilance (Ex) A lernaeati never sleeps and can see in all directions at once owing to its many heads. It cannot be flanked or caught flat-footed.

The sinister and intelligent lernaeati are not just another leftover of ancient reptilian empires. They are beings carefully engineered by the infernal forces of Hell, to promote shadowy cults and tempting cabals of power on the Material Plane. They seek to conceal their infernal origins and connections and adjust their cause to suit their manipulative ways. Lernaeati prefer to send waves of subordinates at their foes instead of entering combat.

On Porphyra
Lernaeati exist in remnant pockets around Freeport, and have done so from before The Calling, paying tribute to Eshsalqua for her patronage through stolen sacrifice. Rolterran provocateurs secrete them within enemy states as a showcase of that government’s “corruption”, though the lernaeati often escape and set up shop on their own.