Owb

Creature 6

uncommon
Medium
shadow

Perception: +13; greater darkvision
Languages: Caligni, cant speak any languages, Telepathy 100 feet
Skills: Acrobatics +15, Deception +13, Diplomacy +11, Occultism +12, Religion +11, Stealth +15; Str +4, Dex +5, Con +4, Int +0, Wis +3, Cha +3

Greater Darkvision

Telepathy 100 feet (aura, magical, mental)

Light Blindness

AC: 24; Fort +14, Ref +15, Will +13
HP: 90; Immunities cold

Speed: 5 feet, fly 30 feet

Melee ◆ claw +16 (agile, magical, unarmed), Damage 1d8+7 slashing plus 1d8 cold

Ranged ◆ burning cold +17 (magical), Damage 2d8 cold plus 1d8 persistent cold

Occult Innate Spells DC 23, attack +15; 7th interplanar teleport (self only, to or from the netherworld only); 5th shadow blast, umbral journey; 4th darkness (at will), invisibility; 3rd mind reading (at will); Cantrips (1st) daze, read aura, shield, void warp

Curse of Darkness ◆ (curse, darkness, occult) The owb inflicts a curse on one creature taking persistent cold damage from their burning cold Strike, stealing the victim's vibrancy. The creature must attempt a DC 23 Fortitude save.

On a failure, the creature gains Light Blindness and its coloration turns to washed out shades of gray, along with all equipment it carries, wields, or wears. These effects have an unlimited duration. Regardless of the result of its save, the creature is temporarily immune for 1 minute.

If the owb uses this ability on a caligni, the curse can't be removed short of a Wish ritual or similar powerful magic.

Source: Pathfinder Monster Core 2

Running this fight? Add the owb to the initiative tracker: type its name and the AC, hit points and Perception for initiative fill in, and the book button shows this stat block mid-fight.