unique ne medium fiend hag humanoid 

Female night hag corruptor

Perception +25; darkvision, detect alignment, detect magic

Languages Abyssal, Aklo, Celestial, Common, Infernal

Skills Arcana +23, Deception +26, Diplomacy +24, Intimidation +24, Occultism +25, Religion +25

Str +7 Dex +5 Con +6 Int +4 Wis +6 Cha +5

Items Memoraifu's heartstone (page 89)

Coven Memoraifu adds dominate, nightmare, scrying, and spellwrack to her coven's spells.

Nightmare Rider When Memoraifu rides a nightmare, the nightmare also gains her status bonus to saves against magic, and both the hag and rider benefit when Memoraifu uses her heartstone's ethereal jaunt innate spell.

AC  34; Fort +23, Ref +22, Will +23; +2 status to all saves vs. magic, –2 to all saves if Memoraifu doesn't have her heartstone

HP 260; Immunities sleep; Weaknesses cold iron 15; Resistances mental 15

Speed 25 feet

Melee [>] jaws +26 (magical), Damage 3d8+9 piercing plus 1d10 evil and Abyssal plague

Melee [>] claw +26 (agile, magical), Damage 3d10+9 slashing plus 1d10 evil

Occult Innate Spells DC 33, attack +25; 9th bind soul (at will, from heartstone), ethereal jaunt (at will, from heartstone); 8th dream council; 6th shadow blast (×2, from heartstone), spirit blast (from heartstone); 5th nightmare; 4th dream message (at will), magic missile (at will); 2nd invisibility (at will); 1st ray of enfeeblement (at will), sleep (at will); Constant (3rd) detect magic; (2nd) detect alignment (all alignments simultaneously)

Abyssal Plague (disease) A creature can't recover from the drained condition until Abyssal plague is cured Saving Throw DC 33 Fortitude; Stage 1 drained 1 (1 day); Stage 2 drained increases by 2 (1 day)

Change Shape [>] (concentrate, occult, polymorph, transmutation) Memoraifu can take on the appearance of any Medium female humanoid. This doesn't change her Speed or her attack or damage bonuses with her Strikes, but might change the damage type her Strikes deal (typically to bludgeoning).

Dream Haunting (enchantment, occult, mental) If Memoraifu is ethereal and hovering over a sleeping chaotic or evil creature, she can ride the victim's back until dawn. The creature endures tormenting dreams as Memoraifu casts nightmare on it, and is exposed to Abyssal plague. Any drained condition caused by dream haunting is cumulative. Only an ethereal being can confront the night hag and stop her dream haunting.

Spell Ambush A creature flat-footed to the night hag takes a –2 circumstance penalty to checks and DCs to defend against her spells.

Extinction Curse #3: Life’s Long Shadows, page 88.