Elemental Cataclysm
Monster Manual (2025) p. 111
- Size
- Gargantuan
- Type
- elemental (titan)
- Alignment
- chaotic neutral
- AC
- 20
- Initiative
- 18
- Hit Points
- 370 (20d20+160)
- Speed
- walk 60 ft., fly 80 ft. (hover), burrow 60 ft., swim 80 ft.
- Saving Throws
- Wis +9, Con +15, Dex +11, Cha +6
- Immunities
- acid, cold, fire, lightning, poison, thunder
- Condition Immunities
- blinded, charmed, deafened, exhaustion, frightened, grappled, paralyzed, petrified, poisoned, prone, restrained, stunned, unconscious
- Senses
- truesight 150 ft.
- Passive Perception
- 12
- Languages
- Primordial
- Challenge
- 22
- Environment
- planar (elemental chaos)
Traits
Proficiency Bonus
+7
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.
recharge
4/DAY
Siege Monster
The cataclysm deals double damage to objects and structures.
Actions
Multiattack
The cataclysm makes two Elemental Burst attacks.
Elemental Burst
Melee or Ranged Attack Roll: +15, reach 30 ft. or range 150 ft. Hit: 25 (5d6 + 8) damage of a type chosen by the cataclysm: Acid, Cold, Fire, Lightning, or Thunder.
Cataclysmic Event (Recharge 4-6)
The cataclysm creates one of the following effects at random (roll 1d4):
Cataclysm:
| d4 | Effect |
|---|---|
| 1 | Clinging Flames: Dexterity Saving Throw: DC 23, each creature in a 60-foot-radius Sphere centered on a point the cataclysm can see within 150 feet. Failure: 45 (13d6) Fire damage. Success: Half damage. Failure or Success: The target starts burning. |
| 2 | Freezing Waves. Strength Saving Throw: DC 23, each creature in a 90-foot Cone. Failure: 22 (5d8) Bludgeoning damage plus 22 (5d8) Cold damage, and the target has the Prone condition. Success: Half damage only. Failure or Success: The target's Speed is reduced to 0 until the end of its next turn. |
| 3 | Raging Storm: A storm cloud fills a 60-foot-radius 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 and Deafened conditions and can't cast spells with a Verbal component. Dexterity Saving Throw: DC 23, each creature that enters the cloud for the first time on a turn or starts its turn there. Failure: 18 (4d8) Lightning damage plus 18 (4d8) Thunder damage. Success: Half damage. |
| 4 | Swallowing Earth: Strength Saving Throw: DC 23, each creature in a 90-foot Cube originating from a point on the ground within 150 feet. Failure: 18 (4d8) Bludgeoning damage plus 18 (4d8) Acid damage, and the target has the Prone condition and is buried under rubble. A buried target has the Restrained condition, has Total Cover, and is suffocating. As an action, a buried creature or another creature within 5 feet of it can make a DC 18 Strength (Athletics) check. On a successful check, the creature is no longer buried. Success: Half damage only. |
recharge
D4
Control Weather
The cataclysm casts the Control Weather spell, requiring no spell components and using Constitution as the spellcasting ability.
- At will: Control Weather
Legendary Actions
Legendary Actions (3/Turn)
The Elemental Cataclysm can take 3 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature's turn. The Elemental Cataclysm regains spent legendary actions at the start of its turn.
recharge
3/TURN
Eruption
The cataclysm makes one Elemental Burst attack.
Rumbling Movement
The cataclysm moves up to its Speed, Fly Speed, or Swim Speed without provoking Opportunity Attacks. Each creature within 5 feet of the cataclysm as it moves is targeted once by the following effect. Constitution Saving Throw: DC 23. Failure: The target has the Prone condition. Failure or Success: The cataclysm can't take this action again until the start of its next turn.
Spells
Control Weather