monster

Elemental Cataclysm

CR 22

Gargantuan Elemental (titan), Chaotic Neutral

Reveal Stat Block

Armor Class

Hit Points

370 (20d20 + 160)

Speed

60 ft., fly 80 ft. (hover), swim 80 ft., burrow 60 ft.

str

dex

con

int

-1

wis

cha

-1

Traits

Earth Glide.The cataclysm can burrow through nonmagical, unworked earth and stone. While doing so, the cataclysm doesn't disturb the material it moves through.

Legendary Resistance (4/Day).If the cataclysm fails a saving throw, it can choose to succeed instead.

Siege Monster.The cataclysm deals double damage to objects and structures.

Actions

Multiattack.The cataclysm makes two Elemental Burst attacks.

Elemental Burst.m,r 15, reach 30 ft. or range 150 ft. ({@damage 5d6 + 8) damage of a type chosen by the cataclysm: Acid, Cold, Fire, Lightning, or Thunder.

Cataclysmic Event 4.The cataclysm creates one of the following effects at random (roll 1d4): {'type':'item','name':'1: Clinging Flames','entries':['dex 23, each creature in a 60-foot-radius Sphere [Area of Effect]|XPHB|Sphere centered on a point the cataclysm can see within 150 feet. 45 ( {'type':'item','name':'2: Freezing Waves','entries':['str 23, each creature in a 90-foot Cone [Area of Effect]|XPHB|Cone. 22 ( {'type':'item','name':'3: Raging Storm','entries':['A storm cloud fills a 60-foot-radius Sphere [Area of Effect]|XPHB|Sphere centered on a point the cataclysm can see within 150 feet. The cloud lasts for 1 minute or until the cataclysm uses Cataclysmic Event again. Creatures entirely in the cloud have the Blinded|XPHB and Deafened|XPHB conditions and can't cast spells with a Verbal component. dex 23, each creature that enters the cloud for the first time on a turn or starts its turn there. 18 ({@damage 4d8) Lightning damage plus 18 (4d8) Thunder damage. Half damage.'] {'type':'item','name':'4: Swallowing Earth','entries':['str 23, each creature in a 90-foot Cube [Area of Effect]|XPHB|Cube originating from a point on the ground within 150 feet. 18 ({@damage 4d8) Bludgeoning damage plus 18 (4d8) Acid damage, and the target has the Prone|XPHB condition and is buried under rubble. A buried target has the Restrained|XPHB condition, has Cover|XPHB|Total Cover, and is suffocating. As an action, a buried creature or another creature within 5 feet of it can make a 18 Strength (Athletics|XPHB) check. On a successful check, the creature is no longer buried. Half damage only.']

Legendary Actions.The creature can take 3 legendary actions...

Eruption.The cataclysm makes one Elemental Burst attack.

Rumbling Movement.The cataclysm moves up to its Speed|XPHB, Fly Speed|XPHB, or Swim Speed|XPHB without provoking Opportunity Attack|XPHB|Opportunity Attacks. Each creature within 5 feet of the cataclysm as it moves is targeted once by the following effect. con 23. The target has the The cataclysm can't take this action again until the start of its next turn.

Elemental Cataclysm

The End and Beginning of Ages

Beyond the fringes of the Elemental Planes, primordial forces endlessly clash amid the Elemental Chaos. Within the vastness and violence of this realm rage elemental cataclysms, entities spawned from the raw forces of the multiverse and awash in dissonant elemental powers. These beings of primal conflict annihilate nearly all they encounter and seed the ruins left in their wake with the potential for new creations.

Elemental cataclysms rarely escape the Elemental Chaos. When they do, it is typically due to some planar disruption or the summons of nihilistic cultists. When they emerge on Material Plane worlds, elemental cataclysms create realm-altering trails of destruction, carelessly destroying cities and throwing whole nations into chaos. The rampages aren't random. Elemental cataclysms abhor anything that visibly mars nature, be it mines or monuments, fortresses or cities, but they vent their most intense rage on works of metal and clockwork. As they sow destruction, they howl condemnation and chant words of unmaking in the languages of the Inner Planes.

Little can stop an elemental cataclysm. Those that oppose one of these calamities often attempt to reverse the ritual that summoned it, coax it through a planar rift, or conjure another titan in hopes that the two destroy one another. These terrors leave a wake of ashes, floods, storms, and broken earth. But after these disasters recede, the land is imbued with new life or environmental changes. Roll on or choose a result from the Elemental Alterations table to inspire what changes emerge after an elemental cataclysm's destruction.