Elder Obsidian Elemental

Huge elemental, neutral

Armor Class

19 (natural armor)

Hit Points

225 (18d12 + 108)

Speed

20 ft.

STR

23 (+6)

DEX

8 (-1)

CON

22 (+6)

INT

4 (-3)

WIS

11 (+0)

CHA

11 (+0)

Damage Immunities

poison

Damage Resistances

cold, fire; bludgeoning, piercing, and slashing damage from nonmagical weapons

Condition Immunities

exhaustion, paralyzed, petrified, poisoned, unconscious

Senses

darkvision 60 ft., passive Perception 10

Languages

Terran

Challenge

17 (18,000 XP)

Brute. A melee weapon attack deals one extra die of its damage when the obsidian elemental hits with it (included in the attack).

Death Throes. When the obsidian elemental dies, it explodes, and each creature within 30 feet of it must make a DC 20 Dexterity saving throw, taking 52 (15d6) slashing damage and 52 (15d6) fire damage on a failed saving throw, or half as much damage on a successful one.

Molten Glass. A creature that hits the obsidian elemental with a melee attack while within 5 feet of it takes 7 (2d6) fire damage.

Actions

Multiattack. The obsidian elemental makes two claw attacks.

Claw. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 33 (6d8 + 6) slashing damage plus 22 (5d8) fire damage.

huge
elemental
cr17
tome-of-horrors