pf2e.fyi
From Pathfinder #146: Cult of Cinders, which isn't enabled.

Belmazog

CREATURE 9
UNIQUEMEDIUMACIDAMPHIBIOUSBOGGARDCHAOTICDRAGONEVILHUMANOID
Perception +18; darkvision, scent (imprecise) 60 feet
Languages Boggard, Chthonian, Common, Draconic, Mwangi
Skills Acrobatics +16, Athletics +18, Deception +19, Intimidation +21, Performance +17, Religion +18, Society +12, Survival +14
Str +5, Dex +3, Con +3, Int -1, Wis +3, Cha +6
AC 28; Fort +18, Ref +16, Will +18
HP 145; Immunities acid, paralyzed, sleep
Speed 40 feet, swim 40 feet; swamp stride
Melee Jaws +20 (unarmed), Damage 2d8+11 piercing plus 1d12 acid
Melee Claw +20 (agile, unarmed), Damage 2d8+11 slashing
Melee Tongue +20 (reach 10), Damage 2d6+11 acid plus Tongue Grab
Divine Prepared Spells DC 27, attack +19; 5th Harm; 4th Burning Hands (×2), Fear, Fireball, Heal (×2); 2nd Ray of Enfeeblement, See Invisibility; Cantrips (5th) Detect Magic, Forbidding Ward, Produce Flame, Shield
Rituals 5th Planar Ally
Breath Weapon (acid, arcane)

Belmazog spews a gout of acid that deals 10d6 acid damage in a 30-foot cone (DC 28 basic Reflex save).

Belmazog can't use Breath Weapon again for 1d4 rounds.

Drowning Drone (auditory, mental, sonic)
Trigger Belmazog or one of her allies within 60 feet attempts a saving throw against an auditory or sonic effect.
Effect Belmazog releases a croak that drowns out other sound. She rolls a Performance check. She and boggard allies in the area can use the higher result of her Performance check or their saves to resolve the effects against the auditory or sonic effect.
Nul-Acrumi Vazghul Ritual

This rare and highly specialized ritual, taught to Belmazog by the Scarlet Triad, allowed her to use the fossilized remains of Dahak to erect powerful defenses in the region in the form of dragon pillars, but the resources and time required to perform the ritual again are not available to Belmazog during the course of this adventure. As a result, and since there is no way for the PCs to learn or benefit from the ritual, further information beyond the repercussions detailed in the adventure itself are not presented here.

Swamp Stride

Belmazog ignores difficult terrain caused by swamp terrain features.

Terrifying Croak (auditory, emotion, fear, mental)

Belmazog unleashes a terrifying croak. Any non-boggard within 30 feet becomes Frightened 1 unless they succeed at a DC 28 Will save; those who critically succeed are temporarily immune for 1 minute.

Tongue Grab

If Belmazog hits a creature with her tongue, that creature becomes Grabbed by Belmazog. Unlike with a normal grab, the creature isn't Immobilized, but it can't move beyond the reach of Belmazog's tongue. A creature can sever the tongue by hitting AC 25 and dealing at least 8 slashing damage. Though this doesn't deal any damage to Belmazog, it prevents her from using her tongue Strike until she regrows her tongue, which takes a week.

Pathfinder #146: Cult of CindersOGL