Elemental, Obsidian

Family: Elementals

Medium elemental, neutral

Armor Class 15 (natural armor)
Hit Points 66 (7d8 + 35)
Speed 20 ft.

18 (+4) 8 (-1) 20 (+5) 4 (-3) 11 (+0) 11 (+0)

Damage Resistances cold, fire; bludgeoning, piercing, and slashing damage from nonmagical weapons
Damage Immunities poison
Condition Immunities exhaustion, paralyzed, petrified, poisoned, unconscious
Senses darkvision 60 ft., passive Perception 10
Languages Terran
Challenge 5 (1,800 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 16 Dexterity saving throw, taking 17 (5d6) slashing damage and 17 (5d6) 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: +7 to hit, reach 5 ft., one target. Hit: 13 (2d8 + 4) slashing damage plus 4 (1d8) fire damage.


An obsidian elemental is merged of equal parts earth and fire, arising in the vast felsic fields that flow and melt in burning oceans along the verges where the two elemental planes intersect. They are hulking piles of faceted black stone, streaked with white striations, spiderwebbed cracks, razor-sharp shards, and a seething molten core within.

Section 15: Copyright Notice

Aegis of Empires Adventure Path © 2021, Legendary Games; Authors: Greg A. Vaughan, Matt Goodall, Steve Helt, Tom Knauss, Anthony Pryor, Alistair J. Rigg, and Jeffrey Swank; based on original material by Greg A. Vaughan.

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