pf2e.fyi
From Pathfinder #151: The Show Must Go On, which isn't enabled.

Smiler

CREATURE 3
UNIQUEMEDIUMCHAOTICEVILGHOULUNDEADUNHOLY

Male ghast

Ghasts-feral, foul-smelling, and constantly hungry-are the more powerful kin of ghouls. They are relentless in the pursuit of their prey.

Few creatures are more ubiquitous to sinister locations such as lonely graveyards and ruined crypts than the flesh-eating undead known as ghouls.

Perception +12; darkvision
Languages Common, Necril
Skills Acrobatics +9, Athletics +9, Intimidation +9, Stealth +9
Str +3, Dex +4, Con +2, Int +1, Wis +2, Cha +4
Items Composite Shortbow, Arrows (20)
AC 19; Fort +9, Ref +12, Will +8
HP 45, void healing; Immunities bleed, death effects, disease, paralyzed, poison, unconscious
Stench (aura, olfactory)

10 feet. A creature entering the aura or starting its turn in the aura must succeed at a DC 18 Fortitude save or become Sickened 1 (plus Slowed 1 as long as it's sickened on a critical failure).

While within the aura, the creature takes a -2 circumstance penalty to saves against disease and to recover from the sickened condition. A creature that succeeds at its save is temporarily immune for 1 minute.

Effect: Ghast Stench

Void Healing

A creature with void healing draws health from void energy rather than vitality energy. It is damaged by vitality damage and is not healed by vitality healing effects. It does not take void damage, and it is healed by void effects that heal undead.

Speed 30 feet, burrow 5 feet
Melee Jaws +12 (finesse, unarmed), Damage 2d6+4 piercing plus Ghast Ghast Fever plus Ghast Paralysis
Melee Claw +12 (agile, finesse, unarmed), Damage 2d4+4 slashing plus Ghast Paralysis
Ranged Shortbow +12 (deadly d10, propulsive, reload 0, range increment 60 feet), Damage 1d6+4 piercing
Consume Flesh (manipulate)
Requirements Smiler is adjacent to the corpse of a creature that died within the last hour.
Effect Smiler devours a chunk of the corpse and regains 3d6 healing Hit Points.

He can regain Hit Points from any given corpse only once.

Ghast Fever (disease)
Saving Throw DC 18 Fortitude
Stage 1 carrier with no ill effect (1 day)
Stage 2 3d8 void damage and regains half as many Hit Points from all healing (1 day)
Stage 3 as stage 2 (1 day)
Stage 4 3d8 void damage and gains no benefit from healing (1 day)
Stage 5 as stage 4 (1 day)
Stage 6 dead, and rises as a Ghast the next midnight
Paralysis (incapacitation, occult)

Any living creature hit by Smiler's attack must succeed at a DC 18 Fortitude save or become Paralyzed. It can attempt a new save at the end of each of its turns, and the DC cumulatively decreases by 1 on each such save.

Swift Leap (move)

Smiler jumps up to half his Speed. This movement doesn't trigger reactions.

Pathfinder #151: The Show Must Go OnOGL