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From Pathfinder Adventure Path: Hell's Destiny, which isn't enabled.

Grachius Alazario

CREATURE 17
UNIQUEMEDIUMDEVILFIENDHUMANHUMANOIDUNHOLY

Variant world ender

Perception +29; greater darkvision
Languages Common, Diabolic
Skills Deception +28, Intimidation +28, Legal Lore +33, Religion +30, Society +30
Str +4, Dex +3, Con +7, Int +8, Wis +3, Cha +2
Items +2 Greater Striking Staff of Fire (Major)
AC 37; Fort +32, Ref +27, Will +29
HP 315; Weaknesses holy 15; Resistances fire 15
Unyielding Purpose
Trigger Grachius would be reduced to 0 HP
Requirements Grachius has a divine immolation spell remaining
Effect Grachius refuses to disappoint Abrogail Thrune; he stabilizes at 1 HP just long enough to cast divine immolation, centered on himself. He dies, immolated in the hellish flames.
Speed 25 feet
Melee Staff of Fire +33 (magical, staff, two hand d8), Damage 3d6 fire plus 3d4+10 bludgeoning
Divine Prepared Spells DC 43, attack +35; 8th Divine Decree (×2), Energy Aegis, Sunburst; 7th Divine Decree, Divine Immolation (×2), Execute; 6th Blood Vendetta (×2), Mislead, Spirit Blast; 5th Divine Immolation (×3), Invoke Spirits; 4th Fly (×2), Suggestion, Unfettered Movement; 2nd Revealing Light (×2); 1st Air Bubble, Charm, Enfeeble (×2); Cantrips (9th) Divine Lance, Guidance, Ignition, Light, Void Warp
Staff of Fire (Major) DC 43, attack +35; 5th Wall of Fire, Fireball; 4th Fire Shield, Wall of Fire, Fireball; 3rd Fireball, Floating Flame; 2nd Floating Flame, Breathe Fire; 1st Breathe Fire; Cantrips (9th) Ignition
Monologue (auditory, concentrate)
Frequency once per round
Effect Grachius ceaselessly expounds upon the ongoing Hellish apocalypse and the futility of his enemies' efforts to stop it. He gains a +1 status bonus to Will saves and a +2 status bonus to damage rolls with his spells. Each time he takes this action again, the bonuses increase by 1 and 2, respectively. The monologue ends (and the bonuses are lost) if Grachius becomes unable to act or speak, or if he ends his turn without having taken this action.
Overwhelming Energy (spellshape)

If the next action Grachius uses is to Cast a Spell, the spell ignores 20 resistance to energy damage. This applies to all damage the spell deals, including persistent damage and damage caused by an ongoing effect of the spell. A creature's immunities are unaffected.

Pathfinder Adventure Path: Hell's DestinyORC