Dragon (Imperial, Underworld), Ancient Underworld DragonAncient Underworld Dragon CR 16Source Bestiary 3 pg. 103 XP 76,800 LE Huge dragon (fire) Init +3; Senses dragon senses, smoke vision; Perception +30 Aura frightful presence (300 ft., DC 26)DefenseAC 39, touch 7, flatfooted 39 (–1 Dex, +32 natural, –2 size) hp 297 (22d12+154) Fort +20, Ref +12, Will +18 DR 15/magic; Immune fire, paralysis, sleep; SR 27 Weaknesses vulnerability to coldOffenseSpeed 40 ft., burrow 60 ft., fly 200 ft. (poor) Melee bite +33 (2d8+18), 2 claws +33 (2d6+12/19–20), gore +32 (2d6+18), tail slap +27 (2d6+18) Space 15 ft., Reach 10 ft. (15 ft. with bite) Special Attacks adamantine claws, breath weapon (100ft. line, 20d6 fire damage, DC 28), crush (DC 28, 2d8+12) SpellLike Abilities (CL 22nd; concentration +27) At will—repel metal or stone, soften earth and stone, spike stones (DC 19), stone shape, wall of stone Spells Known (CL 13th; concentration +18) 6th (4/day)—disintegrate (DC 21), flesh to stone (DC 21) 5th (7/day)—passwall, transmute rock to mud, waves of fatigue 4th (7/day)—enervation, shout (DC 19), solid fog, stone shape 3rd (7/day)—displacement, fireball (DC 18), protection from good, rage, slow 2nd (7/day)—acid arrow, daze monster (DC 17), flaming sphere (DC 17), scorching ray 1st (8/day)—burning hands (DC 16), cause fear (DC 16), magic missile, ray of enfeeblement (DC 16), true strike 0 (at will)—acid splash, bleed (DC 15), detect magic, flare (DC 15), ghost sound, mage hand, read magic, resistance, touch of fatigue (DC 15)StatisticsStr 35, Dex 8, Con 25, Int 20, Wis 21, Cha 20 Base Atk +22; CMB +36; CMD 45 (49 vs. trip) Feats Critical Focus, Improved Bull Rush, Improved Critical (bite, claw), Improved Initiative, Improved Natural Armor, Lunge, Power Attack, Skill Focus (Stealth), Weapon Focus (bite, claw) Skills Acrobatics +21 (+25 when jumping), Appraise +30, Bluff +30, Climb +37, Fly +16, Intimidate +30, Knowledge (dungeoneering, geography, planes) +30, Perception +30, Stealth +22 Languages Common, Draconic, Dwarven, Giant, Ignan, Terran SQ change shape, underworld burrowerEcologyEnvironment 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.Creatures in "Dragon (Imperial, Underworld)" CategorySource Bestiary 3 pg. 102 This serpentine dragon has skin the color of deep volcanic rock, enormous claws, and jagged, stonelike horns and scales.
Although chromatic and metallic dragons are the most widely known, other categories of true dragon exist. Presented here are the five imperial dragons, regal guardians of ancient lands and servants of cosmic balance.Age Categories Many of a true dragon's abilities, attacks, and other statistics improve as a dragon grows older. These increases are divided into 12 age categories—as a dragon ages, its base statistics change as noted on the Dragon Age Categories table.
Age Category  Age in Years  CR  Size  Hit Dice  Natural Armor  Breath Weapon  1 Wyrmling  0–5  Base  Base  Base  Base  Base  2 Very young  6–15  Base + 2  Base + 1  Base + 2  Base + 3  Base × 2  3 Young  16–25  Base + 4  Base + 2  Base + 4  Base + 6  Base × 3  4 Juvenile  26–50  Base + 5  Base + 2  Base + 6  Base + 9  Base × 4  5 Young adult  51–100  Base + 7  Base + 3  Base + 8  Base + 12  Base × 5  6 Adult  101–200  Base + 8  Base + 3  Base + 10  Base + 15  Base × 6  7 Mature adult  201–400  Base + 9  Base + 3  Base + 12  Base + 18  Base × 7  8 Old  401–600  Base + 11  Base + 4  Base + 14  Base + 21  Base × 8  9 Very old  601–800  Base + 12  Base + 4  Base + 16  Base + 24  Base × 9  10 Ancient  801–1,000  Base + 13  Base + 4  Base + 18  Base + 27  Base × 10  11 Wyrm  1,001–1,200  Base + 14  Base + 4  Base + 20  Base + 30  Base × 11  12 Great wyrm  1,201+  Base + 16  Base + 5  Base + 22  Base + 33  Base × 12 
Age Category: This is the age category's name. Age in Years: This is the dragon's actual age. CR: This column modifies the dragon's base CR. Size: This shows how many size categories by which to increase the dragon's base size, depending on its age (from Tiny to Small, Small to Medium, and so on). A true dragon does not gain the standard increases to ability scores when it achieves a larger size—instead, true dragons gain ability score increases according to their age category, as indicated on the Dragon Ability Scores table. Hit Dice: This shows how many additional Hit Dice a dragon gains over its base Hit Dice as it grows. Increases to Hit Dice grant extra hit points, feats, and skill ranks as well as increase the dragon's base attack bonus and base save bonuses. Dragons have skill ranks equal to 6 + their Intelligence modifier per Hit Die. A dragon's increases to ability scores for gaining Hit Dice are included in the total ability score increases (see the Dragon Ability Scores table). Natural Armor: This shows by what amount the dragon's base natural armor bonus increases with each age category. Breath Weapon: Each dragon has a breath weapon (see Combat) that deals a base amount of damage. This multiplier increases the number of dice of damage dealt by the dragon's breath weapon. For example, a mature adult dragon with a base breath weapon that deals 2d6 acid damage would deal 14d6 acid damage (due to the ×7 multiplier).
Age Category  Str  Dex  Con  Int  Wis  Chr  1 Wyrmling  Base  Base  Base  Base  Base  Base  2 Very young  Base + 4  Base – 2  Base + 2  Base + 2  Base + 2  Base + 2  3 Young  Base + 8  Base – 2  Base + 4  Base + 2  Base + 2  Base + 2  4 Juvenile  Base + 10  Base – 2  Base + 6  Base + 4  Base + 4  Base + 4  5 Young adult  Base + 12  Base – 4  Base + 6  Base + 4  Base + 4  Base + 4  6 Adult  Base + 14  Base – 4  Base + 8  Base + 6  Base + 6  Base + 6  7 Mature adult  Base + 16  Base – 4  Base + 8  Base + 6  Base + 6  Base + 6  8 Old  Base + 18  Base – 6  Base + 10  Base + 8  Base + 8  Base + 8  9 Very old  Base + 20  Base – 6  Base + 10  Base + 8  Base + 8  Base + 8  10 Ancient  Base + 22  Base – 6  Base + 12  Base + 10  Base + 10  Base + 10  11 Wyrm  Base + 24  Base – 8  Base + 12  Base + 10  Base + 10  Base + 10  12 Great wyrm  Base + 26  Base – 8  Base + 14  Base + 12  Base + 12  Base + 12  Combat The Dragon Attacks and Speeds table lists the attacks a dragon can employ and the damage it deals (a dash indicates that a dragon of that size does not possess that natural attack). Other abilities described here are gained by dragons when they reach a specific age category.
Size  Fly Speed (maneuverability)  1 Bite  2 Claws  Gore  1 Tail Slap  1 Crush  1 Tail Sweep  Breath Weapon  Line  Cone  Tiny  100 ft. (average)  1d4  1d3  —  —  —  —  30 ft.  15 ft.  Small  150 ft. (average)  1d6  1d4  —  —  —  —  40 ft.  20 ft.  Medium  150 ft. (average)  1d8  1d6  1d6  —  —  —  60 ft.  30 ft.  Large  200 ft. (poor)  2d6  1d8  1d8  1d8  —  —  80 ft.  40 ft.  Huge  200 ft. (poor)  2d8  2d6  2d6  2d6  2d8  —  100 ft.  50 ft.  Gargantuan  250 ft. (clumsy)  4d6  2d8  2d8  2d8  4d6  2d6  120 ft.  60 ft.  Colossal  250 ft. (clumsy)  4d8  4d6  4d6  4d6  4d8  2d8  140 ft.  70 ft.  Fly Speed: A dragon's fly speed increases as indicated, according to its size. Imperial dragons are wingless and their f light is a supernatural ability.
Bite: This is a primary attack that deals the indicated damage plus 11/2 times the dragon's Strength bonus (even though it has more than one attack). A dragon's bite attack has reach as if the creature were one size category larger (+10 feet for Colossal dragons).
Claws: These primary attacks deal the indicated damage plus the dragon's Strength bonus.
Gore: As they are wingless, Medium and larger imperial dragons make gore attacks with their horns instead of wing attacks. A gore is a primary attack that deals the indicated damage plus 11/2 times the dragon's Strength bonus. An imperial dragon's gore attack has reach as if the creature were one size category larger (+10 feet for Colossal dragons).
Tail Slap: The dragon can slap one foe each round with its tail. A tail slap is a secondary attack that deals the indicated damage plus 11/2 times the dragon's Strength bonus (this is an exception to the normal secondary attack rules).
Crush (Ex): A flying or jumping Huge or larger dragon can land on foes as a standard action, using its whole body to crush them. Crush attacks are effective only against opponents three or more size categories smaller than the dragon. A crush attack affects as many creatures as fit in the dragon's space. Creatures in the affected area must succeed at a Reflex save (DC equal to that of the dragon's breath weapon) or be pinned, automatically taking bludgeoning damage during the next round unless the dragon moves off them. If the dragon chooses to maintain the pin, it must succeed at a combat maneuver check as normal. Pinned foes take damage from the crush each round if they don't escape. A crush attack deals the indicated damage plus 11/2 times the dragon's Strength bonus.
Tail Sweep (Ex): This allows a Gargantuan or larger dragon to sweep with its tail as a standard action. The sweep affects a halfcircle with a radius of 30 feet (or 40 feet for a Colossal dragon), extending from an intersection on the edge of the dragon's space in any direction. Creatures within the swept area are affected if they are four or more size categories smaller than the dragon. A tail sweep automatically deals the indicated damage plus 11/2 times the dragon's Strength bonus. Affected creatures can attempt Reflex saves to take half damage (DC equal to that of the dragon's breath weapon).
Breath Weapon (Su): Using a breath weapon is a standard action. A dragon can use its breath weapon once every 1d4 rounds, even if it possesses more than one breath weapon. A breath weapon always starts at an intersection adjacent to the dragon and extends in a direction of the dragon's choice. Breath weapons come in two shapes, lines and cones, whose areas vary with the dragon's size. If a breath weapon deals damage, those caught in the area can attempt Reflex saves to take half damage. The save DC against a breath weapon is 10 + 1/2 the dragon's HD + the dragon's Con modifier. Saves against various breath weapons use the same DC; the type of saving throw is noted in the variety descriptions. A dragon can use its breath weapon when it is grappling or being grappled. Additional Dragon Rules Dragon Senses (Ex): Dragons have darkvision 120 ft. and blindsense 60 ft. They see four times as well as a human in dim light and twice as well in normal light. Frightful Presence (Ex): A dragon's frightful presence has a range equal to 30 feet × the dragon's age category, but otherwise functions as detailed in the Universal Monster Rules. Spells: A dragon knows and casts arcane spells as a sorcerer of the level indicated in its specific description. Its caster level depends on its age, as shown for each type. SpellLike Abilities: A dragon's caster level for its spelllike abilities is equal to its total Hit Dice. Damage Reduction: Dragons gain damage reduction as they age, as indicated on each dragon's specific entry. Their natural weapons are treated as magic weapons for the purpose of overcoming damage reduction. Immunities (Ex): Every dragon is immune to sleep and paralysis. In addition, a dragon is immune to one or two additional forms of attack no matter what its age, as given in its description. Spell Resistance (Ex): As dragons grow older, they become more resistant to spells and spelllike abilities, as indicated in the dragon descriptions. A dragon's SR is equal to 11 + its CR.Underworld Dragon LE dragon (fire) Base Statistics CR 3; Size Tiny; Hit Dice 4d12 Speed 40 ft., burrow 30 ft. Natural Armor +4; Breath Weapon line, 2d6 fire Str 13, Dex 14, Con 13, Int 10, Wis 11, Cha 10 Ecology Environment any underground Organization solitary Treasure triple Special Abilities 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. Lava Eruption (Su) As a fullround 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 30footradius burst, dealing damage as the breath weapon. 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 10foot 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.
Age Category  Special Abilities  Caster Level  Wyrmling  Adamantine claws, immunity to fire  —  Very young  Smoke vision  —  Young  Change shape, soften earth and stone    Juvenile  Frightful presence, stone shape  1st  Young adult  DR 5/magic, spell resistance  3rd  Adult  Spike stones, underworld burrower  5th  Mature adult  DR 10/magic  7th  Old  Wall of stone  9th  Very old  DR 15/magic  11th  Ancient  Repel metal or stone  13th  Wyrm  DR 20/magic  15th  Great wyrm  Clashing rocks, lava eruption  17th 
