Shoggoth

Huge Aberration, Chaotic Evil

AC: 15

Initiative: +7 (17)

HP: 172 (15d12 + 75)

Speed: 30 ft., climb 30 ft., swim 30 ft.

STR: 22 (+6)
DEX: 16 (+3)
CON: 21 (+5)
INT: 20 (+5)
WIS: 17 (+3)
CHA: 8 (-1)

Saving Throws: Dex +7, Con +9

Resistances: bludgeoning; piercing; slashing

Immunities: cold

Condition Immunities: grappled; prone; restrained

Senses: Darkvision 120 ft., Passive Perception 13

Languages: Deep Speech; telepathy 60 ft.

CR: 11 (XP 7,200; PB +4)

Habitat: Arctic, Coastal, Swamp, Underdark

Amphibious.

The shoggoth can breathe air and water.

Mimicry.

The shoggoth can mimic voices and animal sounds. A creature that hears this mimicry can tell it is an imitation only with a successful DC 13 Wisdom (Insight) check.

Susceptible to Charm.

The shoggoth has Disadvantage on saving throws to avoid or end the Charmed condition.

Actions

Multiattack.

The shoggoth makes three Pseudopod attacks. It can replace one attack with a use of Suction Burst if available.

Pseudopod.

Melee Attack Roll: +10, reach 15 ft. Hit: 15 (2d8 + 6) Bludgeoning damage plus 11 (2d10) Thunder damage, and the creature has the Grappled condition (escape DC 16) from one of four pseudopods.

Suction Burst (Recharge 4-6).

Strength Saving Throw: DC 18, one creature Grappled by the shoggoth. Failure: 22 (4d10) Thunder damage, and the target is repelled from the shoggoth. The target no longer has the Grappled condition, is pushed up to 30 feet straight away from the shoggoth, and has the Deafened and Stunned conditions until the end of its next turn. Success: Half damage only.

Reactions

Cold Sprint.

Trigger: The shoggoth is subjected to Cold damage. Response: The shoggoth moves up to its Speed and can make one Pseudopod attack with Advantage.

Find this creature in the encounter builder

Source: Ravenloft: The Horrors Within, p. 266 - Licenses and attribution