Dranoxeris The Black

This dragon doesn't follow all of the dragon's normal rules, with increased size and hit points as well as non-standard attacks to make it more dramatic.

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

Adult Underworld Dragon CR 11
XP 24,800

LE Gargantuan dragon (fire)
Init +4; Senses dragon senses, smoke vision; Perception +20
Aura frightful presence (180 ft., DC 20)

Defense
AC 28, touch 6, flat-footed 28 (+24 natural, –4 size, -2 Dex)
hp 294 (14d12+126)
Fort +14, Ref +7, Will +12
DR 5/magic; Immune fire, paralysis, sleep; SR 22
Weaknesses vulnerability to cold

Offense
Speed 40 ft., burrow 40 ft., fly 200 ft. (poor)
Melee bite +30 (2d6+24), 2 claws +30 (1d8+16/19–20), gore +29 (1d8+24), tail slap +24 (1d8+24)
Space 20 ft.; Reach 15 ft. (20 ft. with bite and gore)
Special Attacks adamantine claws, breath weapon (120-ft. line, 12d6 fire damage, DC 22)

Spell-Like Abilities (CL 14th; concentration +17)
At will—soften earth and stone, spike stones (DC 17), stone shape

Spells Known (CL 5th; concentration +8)
2nd (5/day)—flaming sphere (DC 15), scorching ray
1st (7/day)—burning hands (DC 14), cause fear (DC 14) magic missile, ray of enfeeblement (DC 14)
0 (at will)—acid splash, bleed (DC 13), detect magic, flare (DC 13), read magic, resistance

Statistics

Str 43, Dex 6, Con 29, Int 16, Wis 17, Cha 16
Base Atk +14; CMB +30; CMD 31 (35 vs. trip)

Feats Improved Critical (claws), Improved Initiative, Improved Natural Armor, Lunge, Skill Focus (Stealth), Weapon Focus (bite, claw)
Skills Appraise +20, Bluff +20, Climb +25, Fly +11, Intimidate +20, Knowledge (dungeoneering, geography) +20, Perception +20, Stealth +19

Languages Common, Draconic, Ignan, Terran
SQ change shape, underworld burrower, Lava Eruption

Equipment:
Permanent Draconic Growth Spell cast on him - Greatly increased size, only minor bonus to damage, not as accurate with melee attacks due to it not being his typical form.

Lava Eruption (Su) As a full-round action, a great wyrm underworld dragon can burrow through the ground up to twice its burrow speed. At the end of that movement, if the underworld dragon has use of its breath weapon, it can emerge from the ground spouting lava in a 30-foot-radius burst, dealing damage as the breath weapon.

Has a pet Dragon Turtle, Sheldon.