From Pathfinder Adventure: Rusthenge, which isn't enabled.

Vlorian Cythnigot

CREATURE 3

RARE MEDIUM CHAOTIC EVIL FIEND QLIPPOTH UNHOLY

Variant cythnigot

The cythnigot is a foul fungal parasite that grows and thrives in the corpses of small creatures. It wears these bodies like a suit, but also adjusts and tailors the fleshy covering to suit its needs, and the body ends up looking as alien as anything else spawned from the Abyssal depths. The cythnigot's most identifying feature is the long stalk of fungal material that extends from creature's body, ending in a surprisingly strong set of fanged jaws.

Perception +9; darkvision

Languages Chthonian; telepathy (touch only)

Skills Acrobatics +9, Athletics +9, Occultism +9, Stealth +9

Str +2, Dex +3, Con +4, Int +2, Wis +2, Cha +1

Telepathy (Touch only) (aura, magical)

A monster with telepathy can communicate mentally with any creatures within the listed radius, as long as they share a language. This doesn't give any special access to their thoughts, and communicates no more information than normal speech would.

AC 19; Fort +11, Ref +7, Will +9

HP 45; Immunities controlled, fear effects; Resistances mental 3, physical 3 (except cold iron)

Speed 30 feet

Melee Bite +11 (agile, chaotic, finesse, magical, unholy), Damage 1d8+4 piercing plus 1d4 spirit plus Rust Creep

Occult Innate Spells DC 20, attack +12; 4th Read Omens; 2nd Detect Alignment (At will, Lawful only), Paranoia; 1st Phantom Pain; Cantrips (2nd) Daze, Detect Magic

Rust Creep (disease)

A creature bitten by the Vlorian cythnigot becomes afflicted by rust creep, but with a DC 20 Fortitude save.

Those afflicted by rust creep develop uncomfortable rust-colored bruises on their flesh and endure full-body aches like those one might experience after a long workout. As the affliction progresses, their bodies—as well as the clothing and items they wear or carry—increasingly break down until a painful death occurs. If a character successfully resists contracting rust creep, or recovers from a case of rust creep, they are temporarily immune to future rust creep infections for 24 hours.

Saving Throw DC 20 Fortitude

Stage 1 –1 status penalty to Athletics checks (1 day)

Stage 2 as stage 1 (1 day)

Stage 3 Enfeebled 1 (1 day)

Stage 4 enfeebled 1 and Stupefied 1, plus any armor, clothing and items you carry and that are of a level equal to or less than the disease become broken as the decay spreads to them (1 day; broken items remain broken)

Stage 5 Unconscious (1 day)

Stage 6 unconscious (1 day)

Stage 7 death

Sickening Display (concentrate, emotion, fear, mental, occult, visual)

The cythnigot presents its awful appearance fully, and creatures in a 10-foot emanation must attempt a DC 20 Will save. Once a creature attempts this save, it's temporarily immune to further Sickening Displays for 1 minute.

Critical Success The creature is unaffected.

Success The creature is Off-Guard until its next turn.

Failure The creature is Sickened 1, and is off-guard for as long as it's sickened.

Critical Failure The creature is Sickened 2 and is off-guard for as long as it's sickened.

Pathfinder Adventure: RusthengeOGL