ability_mods:
  cha_mod: 7
  con_mod: 10
  dex_mod: 9
  int_mod: 0
  str_mod: 11
  wis_mod: 8
ac: 43
ac_special: null
alignment: CE
automatic_abilities:
- action_cost: None
  critical_failure: null
  critical_success: null
  description: 60 feet, DC 45. A creature entering or starting its turn in the aura
    that fails at a Fortitude save becomes __doomed 1__ and __drained 1__. If the
    target was already doomed or drained, the values of these conditions increase
    by 1, to a maximum of doomed 3 and drained 3. A creature that dies while doomed
    3 and drained 3 in this way disintegrates into black sand.
  effect: null
  effects: null
  failure: null
  frequency: null
  full_description: null
  generic_description: null
  name: Aura of Annihilation
  range: null
  raw_description: '**Aura of Annihilation** (__aura__, __necromancy__, __occult__)
    60 feet, DC 45. A creature entering or starting its turn in the aura that fails
    at a Fortitude save becomes __doomed 1__ and __drained 1__. If the target was
    already doomed or drained, the values of these conditions increase by 1, to a
    maximum of doomed 3 and drained 3. A creature that dies while doomed 3 and drained
    3 in this way disintegrates into black sand.'
  requirements: null
  success: null
  traits:
  - aura
  - necromancy
  - occult
  trigger: null
- action_cost: None
  critical_failure: null
  critical_success: null
  description: Unlike most undead, Iffdahsil isn't destroyed at 0 HP. Iffdahsil's
    fast healing continues to function normally, though on any round it begins its
    turn at 0 HP, it is __enfeebled 4__ and __slowed 1__ until the start of its next
    turn. While Iffdahsil is at 0 HP, it can be killed permanently only by simultaneously
    exposing it to direct sunlight (or a 10th-level __sunburst__ spell) and casting
    a __miracle__ or __wish__ spell (or similar magic) directed at destroying it.
  effect: null
  effects: null
  failure: null
  frequency: null
  full_description: null
  generic_description: null
  name: Unkillable
  range: null
  raw_description: '**Unkillable** (__necromancy__, __occult__) Unlike most undead,
    Iffdahsil isn''t destroyed at 0 HP. Iffdahsil''s fast healing continues to function
    normally, though on any round it begins its turn at 0 HP, it is __enfeebled 4__
    and __slowed 1__ until the start of its next turn. While Iffdahsil is at 0 HP,
    it can be killed permanently only by simultaneously exposing it to direct sunlight
    (or a 10th-level __sunburst__ spell) and casting a __miracle__ or __wish__ spell
    (or similar magic) directed at destroying it.'
  requirements: null
  success: null
  traits:
  - necromancy
  - occult
  trigger: null
description: 'The slithering horror known as Iffdahsil is an undead __shoggoth__ that
  has haunted the vault of the Black Desert for millennia. __Drow__ legends in particular
  tend to feature Iffdahsil, terrifying the elves from a young age.




  **__Recall Knowledge - Aberration__ (__Occultism__)**: DC 52


  **__Recall Knowledge - Undead__ (__Religion__)**: DC 52'
hp: 380
hp_misc: fast healing 30, negative healing
immunities:
- blinded
- controlled
- critical hits
- deafened
- death effects
- disease
- paralyze
- poison
- precision
- sleep
- unconscious
items: null
languages:
- Aklo
- Necril
level: 21
melee:
- action_cost: One Action
  damage:
    formula: 5d10+21
    type: piercing
  name: pseudopod
  plus_damage:
  - formula: null
    type: Grab
  to_hit: 38
  traits:
  - magical
  - reach 30 feet
name: Iffdahsil
perception: 38
proactive_abilities:
- action_cost: One Action
  critical_failure: null
  critical_success: null
  description: 3d10+17 piercing
  effect: null
  effects: null
  failure: null
  frequency: null
  full_description: null
  generic_description: null
  name: Constrict
  range: null
  raw_description: '**__Constrict__**   3d10+17 piercing'
  requirements: null
  success: null
  traits: null
  trigger: null
- action_cost: None
  critical_failure: null
  critical_success: null
  description: A creature that begins its turn inside Iffdahsil takes 10d6 negative
    damage. Iffdahsil gains temporary HP for 1 minute equal to half the damage dealt.
  effect: null
  effects: null
  failure: null
  frequency: null
  full_description: null
  generic_description: null
  name: Eat Away
  range: null
  raw_description: '**Eat Away** A creature that begins its turn inside Iffdahsil
    takes 10d6 negative damage. Iffdahsil gains temporary HP for 1 minute equal to
    half the damage dealt.'
  requirements: null
  success: null
  traits: null
  trigger: null
- action_cost: Two Actions
  critical_failure: null
  critical_success: null
  description: DC 43, 10d6 negative, Escape DC 43, Rupture 45
  effect: null
  effects: null
  failure: null
  frequency: null
  full_description: null
  generic_description: null
  name: Engulf
  range: null
  raw_description: '**__Engulf__** [Two Actions]  DC 43, 10d6 negative, Escape DC
    43, Rupture 45'
  requirements: null
  success: null
  traits: null
  trigger: null
- action_cost: Two Actions
  critical_failure: null
  critical_success: null
  description: Iffdahsil deals 8d8 piercing damage to each creature in a 10-foot emanation
    (DC 43 basic Reflex save) and can also attempt to __Grab__ any creatures who critically
    fail their save as a free action. Iffdahsil is then __flat-footed__ until the
    start of its next turn.
  effect: null
  effects: null
  failure: null
  frequency: null
  full_description: null
  generic_description: null
  name: Tentacular Burst
  range: null
  raw_description: '**Tentacular Burst** [Two Actions]  Iffdahsil deals 8d8 piercing
    damage to each creature in a 10-foot emanation (DC 43 basic Reflex save) and can
    also attempt to __Grab__ any creatures who critically fail their save as a free
    action. Iffdahsil is then __flat-footed__ until the start of its next turn.'
  requirements: null
  success: null
  traits: null
  trigger: null
ranged: null
rarity: Rare
resistances:
- amount: 20
  type: acid
- amount: 20
  type: cold
- amount: 15
  type: physical (except magical silver)
- amount: 20
  type: sonic
ritual_lists: null
saves:
  fort: 39
  fort_misc: null
  misc: +1 status to all saves vs. magical effects
  ref: 36
  ref_misc: null
  will: 35
  will_misc: null
sense_abilities: null
senses:
- Perception +38
- darkvision
- lifesense (imprecise) 60 feet
- scent (imprecise) 60 feet
- tremorsense (imprecise) 60 feet
size: Gargantuan
skills:
- bonus: 40
  misc: null
  name: 'Athletics '
- bonus: 36
  misc: null
  name: 'Intimidation '
source:
- abbr: 'Pathfinder #155: Lord of the Black Sands'
  page_start: 81
  page_stop: null
speed:
- amount: 40
  type: Land
- amount: 40
  type: burrow
- amount: 25
  type: climb
spell_lists:
- dc: 42
  misc: null
  name: Occult Innate Spells
  spell_groups:
  - heightened_level: null
    level: 9
    spells:
    - frequency: null
      name: overwhelming presence
      requirement: null
  - heightened_level: null
    level: 8
    spells:
    - frequency: at will, self only
      name: disappearance
      requirement: null
    - frequency: null
      name: hallucination
      requirement: null
  - heightened_level: null
    level: 7
    spells:
    - frequency: null
      name: hallucinatory terrain
      requirement: null
  to_hit: null
traits:
- Rare
- CE
- Gargantuan
- Aberration
- Undead
type: Creature
weaknesses:
- amount: 20
  type: good
