here you go
You get to pick one and add the appropriate amount of Gesalt levels ie 11 for gold, 13 silver, and 13 copper. one clue remember we will be fighting black dragons, ie acid
OLD GOLD DRAGON
Gargantuan Dragon (Fire)
Hit Dice: 29d12+203 (391 hp)
Initiative: +4
Speed: 60 ft, fly 250 ft (clumsy), swim 60 ft
AC: 34 (-4 size, +28 natural)
Attacks: Bite +39 melee, 2 claws +34 melee, 2 wings +34 melee, tail slap +34 melee
Damage: Bite 4d6+14, claw 2d8+7, wing 2d6+7, tail slap 2d8+21
Face/Reach: 20 ft by 40 ft / 15 ft
Special Attacks: Breath weapon, spell-like abilities, luck bonus, detect gems, frightful presence
Special Qualities: Water breathing, fire subtype, immunities, DR 10/+1, blindsight, keen senses, SR 27
Saves: Fort +23, Ref +16, Will +23
Abilities: Str 39, Dex 10, Con 25, Int 24, Wis 25, Cha 24
Skills: Bluff +36, Concentration +36, Diplomacy +36, Escape Artist +29, Jump +43, Knowledge (arcana, geography, history, religion) +36, Listen +38, Scry +36, Search +36, Sense Motive +36, Spellcraft +36, Spot +38
Feats: Hover, Flyby Attack, Power Attack, Cleave, Snatch, Improved Initiative, Spell Focus (Evocation), Alertness
Challenge Rating: 20
Alignment: Always lawful good
SA–Breath Weapon (Su): Cone of fire, 60 feet long, every 1d4 rounds; damage 16d10, Reflex half DC 31. This dragon can use a cone of weakening gas instead, forcing subjects who fail a Fortitude save to take 8 points of temporary Strength damage.
SA–Frightful Presence (Ex): Dragons can unsettle foes with their mere presence. This ability takes effect automatically (radius 240 ft) whenever the dragon attacks, charges, or flies overhead. A potentially affected creature (one with less than 29 HD) that succeeds at a Will save (DC 31) remains immune to that dragon's frightful presence for one day. On a failure, creatures with 4 or fewer HD become panicked for 4d6 rounds and those with more than 5 HD become shaken for 4d6 rounds. Dragons ignore the frightful presence of other dragons.
SA–Spell-Like Abilities: 3/day - polymorph self and bless; 1/day - geas/quest.
SA–Luck Bonus (Sp): Once per day the dragon can touch one gem (usually embedded in the dragon's hide) and enchant it to bring good luck. As long as the dragon carries the gem, it and every good creature in a 80 foot radius receives a +1 luck bonus as per stone of good luck. If the dragon gives the gem to another creature, only the bearer gets the bonus. The enchantment lasts 1d3+24 hours but ends if the gem is destroyed.
SA–Detect Gems (Sp): 3/day, the dragon can use this ability. Similar to detect magic, this spell finds only gems. Studying for one round reveals presence or absence of gems, 2 rounds reveals exact number of gems, and 3 rounds reveals exact location, type, and value.
SQ–Immunities (Ex): Immune to sleep, paralysis.
SQ–Water Breathing (Ex): This dragon can breathe underwater indefinitely and can freely use its breath weapons, spells, and other abilities while submerged.
SQ–Blindsight (Ex): Dragons can ascertain creatures by nonvisual means (mostly hearing and scent, but also by noticing vibrations and other environmental clues); this dragon's range is 240 feet.
SQ–Keen Senses (Ex): Dragons can see four times as well as humans in low-light conditions and twice as well in normal light. They also have darkvision (120 feet).
SQ–Fire Subtype (Ex): Fire immunity, double damage from cold except on a successful save.
Spells Known (cast 6/8/8/8/7/5; as a level 11 sorcerer): 0–detect magic, resistance, detect poison, read magic, dancing lights, ghost sound, mage hand, open/close, mending; 1–endure elements, mage armor, divine favor, cure light wounds, shield; 2–bull's strength, cat's grace, blur, endurance, fog cloud; 3–haste, dispel magic, protection from elements, slow; 4–spell immunity, dimension door, improved invisibility; 5–cloudkill, righteous might.
VERY OLD SILVER DRAGON
Huge Dragon (Air)
Hit Dice: 31d12+186 (387 hp)
Initiative: +4
Speed: 40 ft, fly 150 ft (poor)
AC: 38 (-2 size, +30 natural)
Attacks: Bite +40 melee, 2 claws +35 melee, 2 wings +35 melee, tail slap +35 melee
Damage: Bite 2d8+11, claw 2d6+5, wing 1d8+5, tail slap 2d6+16
Face/Reach: 10 ft by 20 ft / 10 ft
Special Attacks: Breath weapon, spell-like abilities, frightful presence
Special Qualities: Cloudwalking, immunities, DR 15/+2, blindsight, keen senses, SR 27
Saves: Fort +23, Ref +17, Will +24
Abilities: Str 33, Dex 10, Con 23, Int 24, Wis 25, Cha 24
Skills: Bluff +38, Concentration +37, Diplomacy +38, Escape Artist +31, Jump +42, Knowledge (arcana, geography, history, religion) +38, Listen +40, Scry +38, Search +38, Sense Motive +38, Spellcraft +38, Spot +40
Feats: Hover, Flyby Attack, Power Attack, Cleave, Snatch, Improved Initiative, Spell Focus (Evocation), Alertness
Challenge Rating: 20
Alignment: Always lawful good
SA–Breath Weapon (Su): Cone of cold, 50 feet long, every 1d4 rounds; damage 18d8, Reflex half DC 31. This dragon can use a cone of paralyzing gas instead, paralyzing subjects who fail a Fortitude save for 1d6+9 rounds.
SA–Frightful Presence (Ex): Dragons can unsettle foes with their mere presence. This ability takes effect automatically (radius 270 ft) whenever the dragon attacks, charges, or flies overhead. A potentially affected creature (one with less than 31 HD) that succeeds at a Will save (DC 32) remains immune to that dragon's frightful presence for one day. On a failure, creatures with 4 or fewer HD become panicked for 4d6 rounds and those with more than 5 HD become shaken for 4d6 rounds. Dragons ignore the frightful presence of other dragons.
SA–Spell-Like Abilities: 3/day-polymorph self, fog cloud, control winds; 2/day-feather fall. A silver dragon’s polymorph self works just like the spell, except that each use allows only one change, which lasts until the dragon assumes another form or reverts to its own (which does not count as a use of this ability).
SQ–Cloudwalking (Su): The dragon can tread on clouds or fog as though on solid ground. The ability functions continuously but can be negated or resumed at will.
SQ–Immunities (Ex): Immune to cold, acid, sleep, paralysis.
SQ–Blindsight (Ex): Dragons can ascertain creatures by nonvisual means (mostly hearing and scent, but also by noticing vibrations and other environmental clues); this dragon's range is 270 feet.
SQ–Keen Senses (Ex): Dragons can see four times as well as humans in low-light conditions and twice as well in normal light. They also have darkvision (120 feet).
Spells Known (cast 6/8/8/8/7/7/5; as a level 13 sorcerer): 0–detect magic, resistance, detect poison, read magic, dancing lights, ghost sound, mage hand, open/close, mending; 1–endure elements, mage armor, divine favor, cure light wounds, shield; 2–bull's strength, cat's grace, blur, endurance, fog cloud; 3–haste, dispel magic, protection from elements, slow; 4–spell immunity, dimension door, improved invisibility, detect scrying; 5–cloudkill, righteous might, dominate person; 6–heal, greater dispelling.
VERY OLD COPPER DRAGON
Huge Dragon (Earth)
Hit Dice: 30d12+180 (375 hp)
Initiative: +4
Speed: 40 ft, fly 150 ft (poor)
AC: 36 (-2 size, +28 natural)
Attacks: Bite +38 melee, 2 claws +33 melee, 2 wings +33 melee, tail slap +33 melee
Damage: Bite 2d8+10, claw 2d6+5, wing 1d8+5, tail slap 2d6+15
Face/Reach: 10 ft by 20 ft / 10 ft
Special Attacks: Breath weapon, spell-like abilities, frightful presence
Special Qualities: Spider climb, immunities, DR 15/+2, blindsight, keen senses, SR 26
Saves: Fort +23, Ref +17, Will +22
Abilities: Str 31, Dex 10, Con 23, Int 20, Wis 21, Cha 20
Skills: Bluff +35, Concentration +36, Diplomacy +35, Escape Artist +30, Jump +40, Knowledge (arcana, history) +35, Listen +37, Scry +35, Search +35, Sense Motive +35, Spellcraft +35, Spot +37
Feats: Hover, Flyby Attack, Power Attack, Cleave, Snatch, Improved Initiative, Spell Focus (Evocation), Alertness
Challenge Rating: 19
Alignment: Always chaotic good
SA–Breath Weapon (Su): Line of acid, 100 feet long, every 1d4 rounds; damage 18d4, Reflex half DC 31. This dragon can use a cone of slow gas instead, forcing subjects who fail a Will save to be slowed as the spell for 1d6+9 rounds.
SA–Frightful Presence (Ex): Dragons can unsettle foes with their mere presence. This ability takes effect automatically (radius 270 ft) whenever the dragon attacks, charges, or flies overhead. A potentially affected creature (one with less than 30 HD) that succeeds at a Will save (DC 30) remains immune to that dragon's frightful presence for one day. On a failure, creatures with 4 or fewer HD become panicked for 4d6 rounds and those with more than 5 HD become shaken for 4d6 rounds. Dragons ignore the frightful presence of other dragons.
SA–Spell-Like Abilities: 2/day - stone shape; 1/day - transmute rock to mud or transmute mud to rock.
SQ–Spider Climb (Ex): This dragon can climb on stone surfaces as though using the spider climb spell.
SQ–Immunities (Ex): Immune to acid, sleep, paralysis.
SQ–Blindsight (Ex): Dragons can ascertain creatures by nonvisual means (mostly hearing and scent, but also by noticing vibrations and other environmental clues); this dragon's range is 270 feet.
SQ–Keen Senses (Ex): Dragons can see four times as well as humans in low-light conditions and twice as well in normal light. They also have darkvision (120 feet).
Spells Known (cast 6/8/7/7/7/7/4; as a level 13 sorcerer): 0–detect magic, resistance, detect poison, read magic, dancing lights, ghost sound, mage hand, open/close, mending; 1–endure elements, mage armor, divine favor, cure light wounds, shield; 2–bull's strength, cat's grace, blur, endurance, fog cloud; 3–haste, dispel magic, protection from elements, slow; 4–spell immunity, dimension door, improved invisibility, detect scrying; 5–cloudkill, righteous might, dominate person; 6–heal, greater dispelling.