Underworld Dragon, Mature Adult

This serpentine dragon has skin the color of deep volcanic rock, enormous claws, and jagged, stonelike horns and scales.

Mature adult Underworld Dragon CR 12

XP 19,200
LE Large dragon (fire)
Init +4; Senses dragon senses, smoke vision; Perception +22; Aura frightful presence (210 ft., DC 21)

AC 32, touch 9, flat-footed 32 (+23 natural, -1 size)
hp 184 (16d12+80)
Fort +15, Ref +10, Will +13
DR 10/magic; Immune fire, paralysis, sleep; SR 23
Weaknesses vulnerability to cold

Speed 40 ft., burrow 40 ft., fly 200 ft. (poor)
Melee bite +25 (2d6+13/19-20), 2 claws +25 (1d8+9/19-20), gore +24 (1d8+13), tail slap +19 (1d8+13)
Space 10 ft.; Reach 5 ft. (10 ft. with bite and gore)
Special Attacks adamantine claws, breath weapon (80-ft. line, 14d6 fire damage, DC 23)
Spell-Like Abilities (CL 16th; concentration +19)

At will—soften earth and stone, spike stones (DC 17), stone shape

Spells Known (CL 7th; concentration +10)

3rd (5/day)—displacement, fireball (DC 16)
2nd (7/day)—acid arrow, flaming sphere (DC 15), scorching ray
1st (7/day)—burning hands (DC 14), cause fear (DC 14), magic missile, ray of enfeeblement (DC 14), true strike
0 (at will)—acid splash, bleed (DC 13), detect magic, flare (DC 13), mage hand, read magic, resistance

Str 29, Dex 10, Con 21, Int 16, Wis 17, Cha 16
Base Atk +16; CMB +26; CMD 36 (40 vs. trip)
Feats Improved Critical (bite, claw), Improved Initiative, Improved Natural Armor, Lunge, Skill Focus (Stealth), Weapon Focus (bite, claw)
Skills Appraise +22, Bluff +22, Climb +28, Fly +13, Intimidate +22, Knowledge (dungeoneering, geography) +22, Perception +22, Stealth +21
Languages Common, Draconic, Ignan, Terran
SQ change shape, underworld burrower

Adamantine Claws (Ex)

The claws of an underworld dragon are made of adamantine, and have the qualities of a weapon made from that material.

Change Shape (Su)

A young or older underworld dragon can assume any humanoid form three times per day as if using polymorph.

Smoke Vision (Ex)

A very young and older underworld dragon can see perfectly in smoky conditions (such as those created by pyrotechnics).

Underworld Burrower (Ex)

An adult underworld dragon gains a 10-foot bonus to its burrow speed. When the underworld dragon becomes old and every two age categories thereafter, its burrow speed increases by an additional 10 feet.

Built by: Brett, d20pfsrd Beastmaster I

Environment any underground
Organization solitary
Treasure triple

Underworld dragons, also called futsanglungs, are calculating, greedy creatures that carve great labyrinthine tunnels beneath the world, defending their hidden treasures. Preferring the earth to the heavens, they channel the fires of the world’s core within their twisting, stonelike bodies and through flaming breath hot enough to turn granite into slag.