Still under construction.
The following fiend is inspired by succubi from World of Warcraft.
FEL'FATALE CR 4
NE Medium outsider (evil, extraplanar, fel'fiend)
Init +3; Senses darkvision 180 ft., low-light vision, see in darkness, Perception +13
AC 16, touch 16, flat-footed 13 (+3 Dex, +3 deflection)
hp 32 (5d10+5); regeneration 1d2–1 (any)
Fort +4, Ref +7, Will +5; +4 vs. disease and poison
DR 5/magic; SR 15; Immune ability drain (taken as ability damage),
death by massive damage, death effects, energy drain, paralysis,
petrification, phantasms, involuntary polymorph effects, sleep effects
Resist acid 5, cold 5, electricity 5, fire 5, negative energy damage 5,
psychic energy damage 15, sonic 5
Defensive Abilities cosmic defiance, unearthly grace
Speed 40 ft., climb 20 ft., swim 30 ft.
Melee +1 netherlash +7/+7 touch (1d8+4)
Melee 2 slams +8 (1d3)
Space 5 ft.; Reach 5 ft. (15 ft. w/ netherlash)
Spell-like Abilities (CL 6th, concentration +9)
At will— invisibility (self only), seduce (DC 16, see below)
Special Attacks cosmic strike, netherlash, rapid lash, sneak attack +3d6
Str 10, Dex 17, Con 12, Int 13, Wis 13, Cha 17
Base Attk +5; CMB +8; CMD 18
Feats Great Fortitude, Improved Feint, Shadow Strike
Racial Bonus Feats Agile Maneuvers, Combat Casting,
Conceal Scent, Diehard, Endurance, Lurker in Darkness,
Weapon Finesse, Whip Mastery
Skills Acrobatics +11, Bluff +11, Climb +12, Escape Artist +9,
Fly +11, Knowledge (planes) +5, Perception +13, Sense Motive +13,
Sleight of Hand +7, Spellcraft +9, Stealth +8, Swim +12
Racial Modifiers +4 Perception, +4 Sense Motive
Languages Abyssal, Common, Infernal, Undercommon; telepathy 300 ft.
SQ concealed alignment, cosmic tolerance, gliding wings,
no breath, trackless step
Concealed Alignment (Ex) Fel'fiends radiate no alignment aura. This affects only alignment detection, not effects that cause harm or are otherwise based on alignment.
Cosmic Defiance (Ex) When and wherever it is advantageous, a stunned or cowering fel'fiend is only considered dazed.
Cosmic Strike (Su) The natural weapons of fel'fiends, as well as any weapons they wield, are considered ghost touch seaborne weapons and overcome all forms of damage reduction based on magic, alignment or material.
Cosmic Tolerance (Su) Fel'fiends adapt to hostile environments as per adapt body (psionic power).
Gliding Wings (Ex) Fel'fatale in true form may glide with good maneuverability to prevent falling damage (as if subject to a nonmagical feather fall spell). While in midair, they can move up to 5 feet laterally for every 1 foot they drop when falling at a speed of 60 feet per round. They cannot gain height with these wings alone; they merely coast in other directions as they fall. If subjected to a strong wind or any other effect that causes them to rise, they can take advantage of the updraft to increase the distance they can glide.
Netherlash (Su) Once per round as a free or immediate action, a fel'fatale may evoke a single netherlash to hold in a single hand. Any creature evoking a netherlash may wield it proficiently without harm.
A netherlash is a supernatural evocation effect that gains a +1 enhancement bonus per 4 effective caster levels when used as a scorpion whip to make melee touch attacks and/or combat maneuver checks. This effect must correspond to a size of scorpion whip the wielder can use in one hand without penalty. A netherlash of medium size deals a 1d8 base amount of cosmic energy damage. Strength does not apply to such damage. The wielder's Charisma modifier applies to the damage dealt by each netherlash attack. A netherlash evoked with this ability ends when no longer held by its evoker or its evoker evokes another.
Rapid Lash (Ex) A fel'fatale may use a whip during a full attack action to make one additional attack at its highest base attack bonus. Doing so imposes a –2 penalty on all attack rolls one makes using that action.
Seduce (Sp) As calm emotions, but only with respect to one humanoid or monstrous humanoid target, rather than creatures in an area. While this effect remains active, its subject is also staggered. The save DC of this Charisma-based spell-like ability increases by 1 per 2 caster levels beyond the first 4.
Sneak Attack (Ex) A fel'fatale has a sneak attack identical to a rogue with a class level equaling its racial Hit Dice. This ability stacks with any sneak attack damage one might gain through taking rogue levels.
Unearthly Grace (Su) A fel'fatale adds its Charisma bonus (if any) as a deflection bonus to AC when wearing no armor.