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Obsidian Ophidian

Size
Huge
Type
Elemental
Challenge Rating
5
Source
Tome of Beasts 3
Alignment
Neutral
Armor Class
16
Speeds
30
Walking Speed
30
Strength Score
17
Dexterity Score
15
Constitution Score
18
Intelligence Score
5
Wisdom Score
12
Charisma Score
7
Skill Proficiencies
Perception
Languages Ref
Ignan, Terran
Hit Points
136
Condition Immunities
Exhaustion 1, Paralyzed, Petrified, Poisoned, Prone, Unconscious
Resistances
Vulnerable to Bludgeoning Damage, Vulnerable to Cold Damage, Resistant to Non-Magical Damage, Resistant to Slashing Damage
Languages
Ignan, Terran

Huge elemental, neutral


Armor Class 16 (natural armor)

Hit Points 136 (13d12+52)

Speed 30 ft.


STR
17 (+3)
DEX
15 (+2)
CON
18 (+4)
INT
5 (−3)
WIS
12 (+1)
CHA
7 (−2)

Skills Perception +1

Damage Vulnerabilities bludgeoning, cold

Damage Resistances nonmagical piercing & slashing attacks

Condition Immunities exhaustion, paralyzed, petrified, poisoned, prone, unconscious

Senses tremorsense 60', passive Perception 14

Languages Ignan, Terran

Challenge 5 (1,800 XP)

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.

Actions

Multiattack. Two Biteks or one Bite and one Constrict.

Bite. Melee Weapon Attack: +6 to hit, 10 ft., one target, 12 (2d8+3) piercing damage. Target: DC 15 Con save or take 5 (2d4) piercing damage at start of each of its turns as shards of obsidian lodge in wound. Any creature can use action to remove shards with DC 12 Wis (Medicine) check. Shards crumble to dust if target receives magical healing.

Constrict. Melee Weapon Attack: +6 to hit, 5 ft., one target, 8 (2d4+3) bludgeoning damage and target is grappled (escape DC 15) if it is a Large or smaller creature. Until this grapple ends target is restrained and takes 5 (2d4) slashing damage at the start of each of its turns and ophidian can't use Constrict on another target.

Lava Splash (Recharge 4-6). Writhes and flails splashing lava at everything. Each creature within 20' of it: 21 (6d6) fire (DC 15 Dex half). To use this must be touching or within 5 ft. of lava.

Stat block from Tome of Beasts 3 (Kobold Press), Open Game Content used under the Open Game License 1.0a. Tome of Beasts 3. ©2022 Open Design LLC. All rights reserved. It is not Geminaea material. See Legal.