uncommon ce medium incorporeal spirit undead 

Perception +18; darkvision

Languages Aklo, Common, Necril

Skills Acrobatics +17, Deception +19, Intimidation +21, Occultism +18, Stealth +19

Str -5 Dex +6 Con +0 Int +3 Wis +3 Cha +6

Coven The witchfire adds nightmare, phantasmal killer, phantasmal calamity, and summon entity to their coven's spells. A coven can contain one or more witchfires, but it must also include at least one living creature capable of forming a coven; three witchfires cannot form a coven.

AC  28; Fort +15, Ref +21, Will +18

HP 125, negative healing; Immunities fire, poison, precision, death effects, disease, paralyzed, unconscious; Resistances all 10

Opportune Witchflame [R] Trigger A creature makes a melee; Effect Strike against or touches the witchfire; The witchfire makes a witchflame caress Strike against the triggering creature.

Speed fly 40 feet

Melee [>] witchflame caress +21 (agile, evil, finesse, magical), Damage 3d6 fire plus 3d6 negative and witchflame

Ranged [>] witchflame bolt +21 (evil, magical, range 100 feet), Damage 2d6 fire plus 2d6 negative and witchflame

Occult Innate Spells DC 28; 6th summon entity (will-o'-wisp only); 5th crushing despair; 4th invisibility, phantasmal killer; 3rd phantom pain; 2nd illusory disguise (at will); Cantrips (5th) dancing lights, ghost sound

Witchflame (curse, fire, necromancy, occult) Any creature that takes negative damage from a witchfire's Strike must attempt a DC 26 Will save. Critical Success The creature is unaffected and is temporarily immune to witchflame for 1 hour.Success The creature appears to catch fire with sickly green flames. These flames deal no damage on their own, but as long as the flames burn, the creature can't be concealed (invisible creatures are concealed rather than being undetected) and gains weakness 5 to fire for 1 round.Failure As success, but the effect is permanent until removed.Critical Failure As failure, but the creature gains weakness 10 to fire.

Witchflame Kindling [>>] (fire, necromancy, occult) Requirements A creature within 30 feet of the witchfire burns with witchflame; Effect The witchfire's eyes and mouth glow brightly, and the witchflame on the target creature momentarily burns much hotter, dealing 5d6 fire damage and 5d6 negative damage to that creature (DC 28 basic Fortitude save). The witchfire can't use Witchflame Kindling for 1d4 rounds.

Bestiary 2, page 293.