Elemental, Obsidian (Greater)

Family: Elementals

Huge elemental, neutral

Armor Class 18 (natural armor)
Hit Points 175 (14d12 + 84)
Speed 20 ft.

20 (+5) 8 (-1) 22 (+6) 4 (-3) 11 (+0) 11 (+0)

Damage Resistances cold, fire; bludgeoning, piercing, and slashing damage from nonmagical attacks
Damage Immunities poison
Condition Immunities exhaustion, paralyzed, petrified, poisoned, unconscious
Senses darkvision 60 ft., passive Perception 10
Languages Terran
Challenge 14 (11,500 XP)

Special Traits

  • 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 19 Dexterity saving throw, taking 42 (12d6) slashing damage and 42 (12d6) 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.


  • Multiattack. The obsidian elemental makes two claw attacks.
  • Claw. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 23 (4d8 + 5) slashing damage plus 13 (3d8) fire damage.


In a quasi-realm where elemental water and elemental fire conjoin, there exists a pocket plane known as the Quasi-plane of Obsidian; a plane of barren wastes and blackened rock, of razor-sharp obelisks and fields of sharpened glass. Creatures native to this plane appear as blackened obsidian with jagged, serrated, or clear-cut angles and edges. Some have barbed spikes adorning their elemental forms.

Obsidian quasi-elementals are usually encountered on their home plane or on the Plane of Fire. Still some can be found on the Obsidian Plain in the Plane of Molten Skies. Most, however, prefer the serenity that the Quasi-plane of Obsidian offers, and thus they rarely venture forth unless summoned.

Obsidian quasi-elementals are deadly combatants and strike with their sharpened claws, ripping and tearing at their opponents. They are relentless in their attacks and never give quarter.

Section 15: Copyright Notice

City of Brass ©2018 Frog God Games; Authors: Casey Christofferson and Scott Greene