Obsidian Ophidian 2014

CR 5 elemental

Huge elemental, neutral

Armor Class: 16 (natural armor)
Hit Points: 136 (13d12+52)
Speed: 30 ft.

STR17 (+3)

DEX15 (+2)

CON18 (+4)

INT5 (-3)

WIS12 (+1)

CHA7 (-2)

Saving Throws
Skills: Perception +1
Vulnerabilities: bludgeoning, cold
Resistances: nonmagical piercing & slashing attacks
Condition Immunities: exhaustion, paralyzed, petrified, poisoned, prone, unconscious
Senses: tremorsense 60 ft., passive Perception 14
Languages: Ignan, Terran
Challenge: 5 (1,800 XP) · Proficiency Bonus +3

Lava Walker.

Can move across lava surface as if harmless solid ground. In addition can swim through lava at its walk speed.

One with Lava.

Can’t be surprised by creatures within 5 ft. of lava and can sense any creature touching same pool of lava it is touching.

Sharp Fragments.

When it takes bludgeoning each creature within 5 ft. of it takes 2 (1d4) piercing damage as shards of obsidian fly from it.

Volcanic Rejuvenation.

Regains 10 hp at the start of its turn if at least part of its body is in contact with lava. If it takes cold dmage this doesn't function at the start of its next turn. Dies only if it starts its turn with 0 hp and doesn’t regenerate.

Source: Tome of Beasts 3 (Kobold Press) · License: OPEN GAME LICENSE Version 1.0a details