VAPOROUS SERPENT
An orichalcum dragon's animated breath, referred to as a vaporous serpent, has the following statistics.
Type: Construct (earth).
Size: One size smaller than the orichalcum dragon.
Initiative: The vaporous serpent always acts immediately after the orichalcum dragon's initiative count.
Hit Dice: The vaporous serpent has 1/10 the orichalcum dragon's total hit points, plus bonus hit points based on its size (see Bestiary, pg. 307). For purposes of determining its saves and base attack bonus, its Hit Dice are equal to the number of dice of damage the orichalcum dragon's breath weapon deals.
Senses: The vaporous serpent has darkvision 60 ft. and low-light vision.
Speed: 30 ft.
AC: The vaporous serpent's natural armor bonus varies by size:
Tiny: +2
Small or Medium: +3
Large: +4
Huge: +8
Gargantuan: +10
Defensive Qualities: The vaporous serpent has construct traits and immunity to acid. It gains the following defensive quality.
Acid Body (Ex): Creatures that strike the vaporous serpent with natural weapons or unarmed attacks take 1d8 acid damage.
Attacks: The vaporous serpent has a bite attack that deals damage based on its size (see Bestiary, pg. 302) plus 1-1/2 its Strength modifier. This damage is half piercing and half acid.
Saves: The vaporous serpent has no good saving throws.
Abilities: The vaporous serpent's Strength and Dexterity scores are equal to the orichalcum dragon's. It has no Constitution or Intelligence score, its Wisdom score is 10, and its Charisma score is 1.
Alignment: Neutral.
YOUNG ORICHALCUM DRAGON
CR: 10
XP: 9,600
LN Large dragon (earth)
Init: +5; Senses: Dragon senses; Perception +16
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AC: 22, touch 10, flat-footed 21 (+1 Dex, +12 natural, -1 size)
hp: 104 (11 HD)
Fort +10, Ref +10, Will +9
Immune: Acid, paralysis, sleep
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Speed: 40 ft., fly 200 ft. (poor)
Melee: Bite +15 (2d6+7), 2 claws +15 (1d8+5), 2 wings +13 (1d6+2), tail slap +13 (1d8+7)
Space: 10 ft.; Reach: 5 ft. (10 ft. with bite or tail slap)
Special Attacks: Animate breath, breath weapon (80-ft. line, 6d8 acid damage, Reflex DC 18 for half, usable every 1d4 rounds)
Spell-Like Abilities (CL 11th, concentration +13):
At will - Detect magic
Spells Known (CL 1st, concentration +3):
1st (4/day) - Identify, shield
0 (at will) - Dancing lights, mage hand, message, read magic
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Str 21, Dex 12, Con 17, Int 14, Wis 15, Cha 14
Base Atk: +11; CMB: +17; CMD: 28 (32 vs. trip)
Feats: Hover, Improved Initiative, Lightning Reflexes, Multiattack, Power Attack, Vital Strike
Skills: Appraise +16, Diplomacy +16, Fly +11, Intimidate +16, Knowledge (engineering, history) +16, Perception +16, Spellcraft +16
Languages: Common, Draconic, one ancient language
YOUNG VAPOROUS SERPENT
N Medium construct (earth)
Init: as dragon; Senses: Darkvision 60 ft., low-light vision; Perception +0
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AC: 14, touch 11, flat-footed 13 (+1 Dex, +3 natural)
hp: 30 (6 HD)
Fort +2, Ref +4, Will +2
Defensive Abilities: Acid body (1d8 acid); Immune: Acid, construct traits
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Speed: 30 ft.
Melee: Bite +11 (1d6+8 acid)
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Str 21, Dex 12, Con --, Int --, Wis 10, Cha 1
Base Atk: +6; CMB: +11; CMD: 22 (can't be tripped)
ADULT ORICHALCUM DRAGON
CR: 14
XP: 38,400
LN Huge dragon (earth)
Init: +4; Senses: Dragon senses; Perception +21
Aura: Frightful presence (180 ft., DC 22)
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AC: 29, touch 8, flat-footed 29 (+21 natural, -2 size)
hp: 195 (17 HD)
Fort +15, Ref +12, Will +16
DR 5/magic; Immune: Acid, paralysis, sleep; SR 25
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Speed: 40 ft., 200 ft. (poor)
Melee: Bite +23 (2d8+12), 2 claws +23 (2d6+8), 2 wings +18 (1d8+4), tail slap +19 (2d6+12/19-20)
Space: 15 ft.; Reach: 10 ft. (15 ft. with bite or tail slap)
Special Attacks: Animate breath, breath weapon (100-ft. line, 12d6 acid damage, Reflex DC 23 for half, usable every 1d4 rounds), crush (2d8+12, DC 23)
Spell-Like Abilities (CL 17th, concentration +21):
At will - Detect magic, explosive runes, fire trap
Spells Known (CL 7th, concentration +11, +15 ranged touch):
3rd (5/day) - Dispel magic, haste
2nd (7/day) - Make whole, scorching ray, see invisibility
1st (7/day) - Identify, mage armor, magic missile, shield, true strike
0 (at will) - Dancing lights, flare (DC 14), mage hand, message, open/close, prestidigitation, read magic
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Str 27, Dex 10, Con 21, Int 18, Wis 19, Cha 18
Base Atk: +17; CMB: +27; CMD: 37 (41 vs. trip)
Feats: Hover, Improved Critical (tail slap), Improved Initiative, Iron Will, Lightning Reflexes, Multiattack, Power Attack, Vital Strike, Weapon Focus (tail slap)
Skills: Appraise +21, Diplomacy +21, Fly +11, Intimidate +21, Knowledge (engineering, history, nobility) +21, Perception +21, Spellcraft +21, Use Magic Device +21
Languages: Common, Draconic, Elven, two ancient languages
ADULT VAPOROUS SERPENT
N Large construct (earth)
Init: as dragon; Senses: Darkvision 60 ft., low-light vision; Perception +0
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AC: 14, touch 10, flat-footed (+4 natural)
hp: 49 (12 HD)
Fort +4, Ref +4, Will +4
Defensive Abilities: Acid body (1d8 acid); Immune: Acid, construct traits
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Speed: 30 ft.
Melee: Bite +19 (1d8+12 acid)
Space: 10 ft.; Reach: 5 ft.
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Str 27, Dex 10, Con --, Int --, Wis 10, Cha 1
Base Atk: +12; CMB: +21; CMD: 31 (can't be tripped)
ANCIENT ORICHALCUM DRAGON
CR: 19
XP: 204,800
LN Gargantuan dragon (earth)
Init: +3; Senses: Dragon senses; Perception +31
Aura: Corrosive (10 ft., 1d6 acid damage), frightful presence (300 ft., DC 28)
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AC: 42, touch 9, flat-footed 42 (-1 Dex, +33 natural)
hp: 340 (25 HD)
Fort +21, Ref +15, Will +22
DR 15/magic; Immune: Acid, paralysis, sleep; SR 21
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Speed: 40 ft., fly 250 ft. (clumsy)
Melee: Bite +33 (4d6+18/19-20), 2 claws +33 (2d8+12), 2 wings +31 (2d6+6), tail slap +31 (2d8+18 plus grab)
Space: 20 ft.; Reach: 15 ft. (20 ft. with bite or tail slap)
Special Attacks: Animate breath, breath weapon (120 ft. line, 20d8 acid damage, Reflex DC 29 for half, usable every 1d4 rounds), constrict (2d8+18), crush (4d6+18, DC 29), tail sweep (2d6+18, DC 29)
Spell-Like Abilities (CL 25th, concentration +31):
At will - Detect magic, explosive runes, fire trap, legend lore, teleport trap
Spells Known (CL 15th, concentration +21):
7th (4/day) - Delayed blast fireball (DC 23), vision
6th (6/day) - Acid fog, antimagic field, guards and wards (DC 22)
5th (6/day) - Cone of cold (DC 21), polymorph, telekinesis (DC 21), waves of fatigue (DC 21)
4th (6/day) - Detect scrying, enervation (DC 20), hallucinatory terrain (DC 20), mass enlarge person
3rd (6/day) - Dispel magic, gaseous form, haste, slow (DC 19)
2nd (6/day) - Make whole, scorching ray, see invisibility, shatter (DC 18), web
1st (6/day) - Identify, mage armor, magic missile, shield, true strike
0 (at will) - Arcane mark, bleed (DC 16), dancing lights, flare (DC 16), mage hand, message, open/close, prestidigitation, read magic
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Str 35, Dex 8, Con 25, Int 22, Wis 23, Cha 22
Base Atk: +25; CMB: +41; CMD: 50 (54 vs. trip)
Feats: Critical Focus, Flyby Attack, Hover, Improved Critical (bite, tail slap), Improved Initiative, Improved Vital Strike, Iron Will, Lightning Reflexes, Multiattack, Power Attack, Vital Strike, Weapon Focus (tail slap)
Skills: Appraise +31, Diplomacy +31, Fly +14, Intimidate +31, Knowledge (arcana, engineering, history, nobility, planes) +31, Perception +31, Spellcraft +31, Use Magic Device +31
Languages: Common, Draconic, Dwarven, Elven, three ancient languages
ANCIENT VAPOROUS SERPENT
N Huge construct (earth)
Init: as dragon; Senses: Darkvision 60 ft., low-light vision; Perception +0
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AC: 19, touch 9, flat-footed 19 (-1 Dex, +10 natural)
hp: 74 (20 HD)
Fort +6, Ref +5, Will +6
Defensive Abilities: Acid body; Immune: Acid, construct traits
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Speed: 30 ft.
Melee: Bite +32 (2d8+18)
Space: 20 ft.; Reach: 15 ft.
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Str 35, Dex 8, Con --, Int --, Wis 10, Cha 1
Base Atk: +20; CMB: +34; CMD: 43 (can't be tripped)