Illustration Xan Drake

Sathaq Worm

Tome of Beasts
Challenge 10
(5,900 XP)
Robinloft Estimated CR 9
Huge elemental, neutral evil
Armor Class 16 (natural armor)
Hit Points 172 (15d12+75)
Speed 20 ft., burrow 20 ft., swim 20 ft.
STR
22 (+6)
DEX
6 (-2)
CON
20 (+5)
INT
5 (-3)
WIS
12 (+1)
CHA
9 (-1)
Saving Throws —
Skills Perception +5, Stealth +2
Damage Vulnerabilities thunder
Damage Resistances fire; bludgeoning, piercing, and slashing from nonmagical attacks
Damage Immunities acid, poison
Condition Immunities exhaustion, paralyzed, petrified, poisoned, unconscious
Senses tremorsense 60 ft., passive Perception 15
Languages understands Deep Speech and Terran but can't speak
Environments
Agonizing Aura.

The sathaq worms’ presence induces pain in creatures native to the Material Plane. Any creature that starts its turn within 30 feet of the sathaq worm must make a DC 17 Fortitude saving throw. On a failed save, the creature is poisoned until the start of its next turn. If a creature’s saving throw succeeds, it is immune to the sathaq worm’s Agonizing Aura for the next 24 hours.
Earth Glide.

The sathaq worm can burrow through nonmagical, unworked earth and stone. While doing so, the elemental doesn’t disturb the material it moves through.
Earthen Camoflage.

The sathaq worm’s stealth bonus is increased to +6 in sand, mud, or dirt.
Siege Monster.

The sathaq worm deals double damage to objects and structures.

Actions

Bite. Melee Weapon Attack: +10 to hit, reach 10 ft., one target. Hit: 24 (4d8 + 6) piercing damage. If the target is a Large or smaller creature, it must succeed on a DC 18 Dexterity saving throw or be swallowed by the sathaq worm. A swallowed creature is blinded and restrained, has total cover against attacks and other effects outside the worm, and takes 7 (2d6) bludgeoning damage plus 7 (2d6) slashing damage plus 7 (2d6) acid damage at the start of each of the sathaq worm’s turns. The sathaq worm can have only one creature swallowed at a time. If the sathaq worm takes 20 damage or more on a single turn from a creature inside it, the sathaq worm must succeed on a DC 15 Constitution saving throw at the end of that turn or regurgitate the swallowed creature, which falls prone in a space within 5 feet of the sathaq worm. If the sathaq worm dies, a swallowed creature is no longer restrained by it and can escape from the corpse by using 10 feet of movement, exiting prone.

Sathaq Worm

Not yet described

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