rare n medium construct golem mindless 

Variant iron golem (Bestiary 188)

Perception +28; darkvision

Skills Athletics +38

Str +9 Dex +0 Con +6 Int -5 Wis +0 Cha -5

AC  42; Fort +33, Ref +28, Will +29

HP 270; Immunities bleed, death effects, disease, doomed, drained, fatigued, fire, healing, magic (see below), mental, necromancy, nonlethal attacks, paralyzed, poison, sickened, unconscious; Resistances physical 20 (except adamantine)

Golem Antimagic harmed by acid (9d10, 3d8 from areas and persistent damage); healed by electricity (area 3d8 HP); slowed by fire

Vulnerable to Neutralize Poison Casting neutralize poison on the golem deactivates its Breath Weapon for 1 minute.

Vulnerable to Rust Magical rusting effects, like a rust monster's antennae, affect the guillotine golem normally.

Speed 20 feet

Melee [>] blade +36 (magical, reach 10 feet), Damage 3d12+15 slashing plus decapitation

Breath Weapon [>>] (necromancy, occult, poison) The guillotine golem emits poisonous gas in a 10-foot radius centered on the corner of one of the golem's squares. The gas persists for 1 round. Any creature in the area (or that later enters the area) is exposed to the golem's poison. The golem can't use its Breath Weapon again for 1d4 rounds.

Decapitation If the guillotine golem critically hits a creature with its blade Strike, the creature must succeed at a DC 40 Fortitude save or be decapitated, dying instantly unless it can survive without a head.

Guillotine Golem Poison (poison) Any drained value from this poison is reduced by 1 every hour.

Saving Throw DC 40 Fortitude; Maximum Duration 4 rounds; Stage 1 3d6 poison and drained 1 (1 round); Stage 2 5d6 poison and drained 2 (1 round); Stage 3 10d6 poison and drained 3 (1 round)

Inexorable March [>] The guillotine golem Strides up to its Speed, pushing back each creature whose space it moves into and damaging them if they try to stop its movement. A creature can attempt to bar the way by succeeding at a

{@dc 44} Fortitude save. On a critical success, the resisting creature takes no damage; otherwise, it is damaged as if hit by the golem's blade Strike.

Night of the Gray Death, page 32.