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Slow Storm

Size
Huge
Type
Elemental
Challenge Rating
15
Source
Tome of Beasts
Alignment
Chaotic-Neutral
Armor Class
19
Speeds
0, fly 60
Walking Speed
0
Flying Speed
60
Strength Score
20
Dexterity Score
19
Constitution Score
22
Intelligence Score
11
Wisdom Score
16
Charisma Score
11
Saving Throws
Dexterity, Constitution
Vision
Blindsight (30ft), Darkvision (120ft)
Languages Ref
Common, Primordial
Hit Points
225
Condition Immunities
Prone
Resistances
Resistant to Acid Damage, Resistant to Cold Damage, Resistant to Fire Damage, Immune to Lightning Damage
Languages
Aethyrian Common, Primordial

Huge elemental, chaotic neutral


Armor Class 19

Hit Points 225 (18d12+108)

Speed 0 ft., fly 60 ft. (hover)


STR
20 (+5)
DEX
19 (+4)
CON
22 (+6)
INT
11 (+0)
WIS
16 (+3)
CHA
11 (+0)

Saving Throws Dex +9, Con +11

Damage Resistances acid, cold, fire

Damage Immunities lightning

Condition Immunities prone

Senses blindsight 30 ft., darkvision 120 ft., passive Perception 13

Languages Common, Primordial

Challenge 15 (13,000 XP)

Bone Wrack. When hit by the slow storm's slam or breath weapon attack, the storm absorbs moisture from the living creatures' joints, causing stiffness and pain. In addition to 1d4 Dexterity drain, any creature caught within the slow storm's breath weapon that fails another DC 18 Constitution save suffers crushing pain in bones and joints. Any round in which the pained creature moves, it takes 1d4 necrotic damage per 5 feet moved. Bone wracking pain lasts until the affected creature regains at least 1 point of lost Dexterity.

Innate Spellcasting. the slow storm's innate spellcasting ability is Wisdom (spell save DC 16). It can innately cast the following spells, requiring no material components:

at will: lightning bolt

3/day: chain lightning

Storm Form. A creature that enters or starts its turn inside the slow storm's whirlwind takes 9 (2d8) force damage. A creature can take this damage just once per round. In addition, ranged missile weapon attacks against the slow storm have disadvantage because of the high-speed wind.

Actions

Slam. Melee Weapon Attack: +10 to hit, reach 15 ft., one target. Hit: 31 (4d12 + 5) bludgeoning damage plus 9 (2d8) piercing damage.

Static Shock (Recharge 5-6). The slow storm exhales its electrical power in a 30-foot cone. Targets in the area of effect take 54 (12d8) lightning damage, 1d4 Dexterity loss, and suffer bone wrack. A successful DC 18 Constitution saving throw halves the Dexterity loss and prevents the bone wrack.

Description

Wisps of humid wind revolve around this spiny ball. Two massive black eyes and a dark mouth are the only features visible through its static straight quills.
Chaos Aging. Despite its comical appearance, a slow storm is a creature of chaos, able to visit the pains of old age on the young and fit. It turns the bodies of physically able creatures against them, forcing them to choose between relative inactivity or ever‑increasing pain.
Surrounded by Wind. A slow storm is a smaller creature than the space it occupies, and its vulnerable physical body is protected by a cyclonic wind surrounding it. The slow storm occupies a space 15 feet square, but its physical body occupies just the center 5-foot space. The nucleus of a slow storm is a two-foot radius sphere weighing 75 lb. The rest of the space is “occupied” by protective, high-speed wind. Only the central, physical body is susceptible to damage; the wind is just wind. Enemies using melee weapons with less than 10-foot reach must step into the whirlwind to attack the slow storm.
Static Generator. A slow storm has no internal organs other than its brain, and it lives on the energy and moisture it drains from opponents. Its quills not only deflect debris but also generate a ball of static electricity that delivers a shock attack.
Elemental Nature. A slow storm doesn’t require air, food, drink, or sleep.

Stat block from Tome of Beasts (Kobold Press), Open Game Content used under the Open Game License 1.0a. Tome of Beasts. Copyright 2016, Open Design; Authors Chris Harris, Dan Dillon, Rodrigo Garcia Carmona, and Wolfgang Baur. It is not Geminaea material. See Legal.