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Volcanic Behir - AI-generated fantasy Monster

Volcanic Behir

A behir that survives long enough in a volcano undergoes a brutal metamorphosis. Its scales become dark as cooled lava, its blood turns incandescent, and its lightning breath acquires the sharp metallic scent of a storm trapped inside a furnace. Such creatures develop a hatred for fire giants and dragons, whose presence they interpret as a challenge to their dominion.

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HugeMonstrosity(Elemental Adaptation)CR Challenge 11, HardChaotic Evil

Volcanic Behir

BehirVolcanicElementalAmbush PredatorSolo BossDragon Hunter
HP168AC16SPDSpeed 50 ft., Climb 40 ft., Can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.CRChallenge 11, HardPerceptionStealth
STR
23
save
DEX
16
save
CON
18
save
INT
7
WIS
14
CHA
12
Climbing Predator. The behir can climb difficult surfaces, including ceilings, without needing to make an ability check.
Volcanic Adaptation. The behir is adapted to volcanic heat. It has Resistance to Fire and Acid damage and Immunity to Lightning damage and the Poisoned condition.
Ashen Ambusher. The behir has Advantage on Dexterity (Stealth) checks made in rocky, ash-filled, or smoke-obscured terrain.
Basalt Tremorsense. The behir can sense vibrations through solid volcanic stone within 60 feet.
Multiattack. The behir makes one Bite attack and one Constrict attack. It can replace the Constrict attack with Swallow if available.
Bite. Melee Attack Roll: +10, reach 10 ft. Hit: 22 () Piercing damage. If the target is a Large or smaller creature, it is subjected to the behir's Constrict if the behir isn't already constricting a creature.
Constrict. Melee Attack Roll: +10, reach 5 ft. Hit: 17 () Bludgeoning damage, and the target has the Grappled and Restrained conditions. The behir can constrict only one creature at a time. The target can escape the grapple by succeeding on a Strength or Dexterity saving throw at the end of each of its turns.
Swallow. The behir makes one Bite attack against a Large or smaller creature it is grappling. If the attack hits and the target is reduced to 0 Hit Points by the attack, the target is swallowed and the grapple ends. While swallowed, the creature has the Blinded and Restrained conditions, has Total Cover against attacks and other effects outside the behir, and takes 21 () Acid damage at the start of each of the behir's turns. If the behir takes 30 or more damage on a single turn from a creature inside it, the behir must succeed on a Constitution saving throw at the end of that turn or regurgitate all swallowed creatures, which fall Prone in a space within 10 feet of the behir. If the behir dies, a swallowed creature is no longer Restrained by it and can escape from the corpse by using 15 feet of movement.
Lightning Breath. The behir exhales superheated lightning in a 20-foot-long, 5-foot-wide line. Each creature in that area makes a Dexterity saving throw, taking 66 () Lightning damage on a failed save or half as much damage on a successful one. The behir can't use Lightning Breath again until it finishes a Short or Long Rest, or until it takes 30 or more damage.
Furnace Pulse. The behir releases a wave of furnace heat. Each creature within 10 feet of the behir must succeed on a Dexterity saving throw or take 10 () Fire damage and be pushed up to 10 feet away. The behir can use this action only while standing on volcanic stone, ash, or magma-heated ground.
Hooking Claw. When a creature the behir can see within 10 feet moves willingly, the behir lashes out with a Claw attack. If the attack hits, the creature's Speed is reduced by 10 feet until the end of its next turn.
Skittering Coil. The behir moves up to half its Speed without provoking Opportunity Attacks.
Claw. The behir makes one Claw attack. Melee Attack Roll: +10, reach 10 ft. Hit: 10 () Slashing damage.
Savage Bite (Costs 2 Actions). The behir makes a Bite attack against a creature it is grappling. If the attack hits, the target takes the Bite's damage but isn't swallowed unless the behir uses Swallow on its turn.
Caldera Eruption (Costs 3 Actions). The behir uses Furnace Pulse, if available, or causes a nearby volcanic vent within 30 feet to erupt. Each creature within 5 feet of that vent must succeed on a Dexterity saving throw or take 10 () Fire damage.
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