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Blue Dragons

Blue dragons are vain and territorial. They are orderly creatures and are unusual for chromatics in that they keep fairly well-ordered, hierarchical societies. They are more likely to be mocking and manipulative than outrightly cruel or murderous to 'lesser' creatures. They are infamous for tricking desert travelers into drinking sand or going miles out of their way to avoid nonexistent dust basins.

Basic Information

Anatomy

A blue dragon flying overhead is easily distinguished from a brass dragon by its batlike wings, which have short alar thumbs and a mottled or dappled pattern. The alar phalanges (the fingerlike bones that support the wing) have knobby joints, and the phalanges are all the same length, giving the wings a rounded look. The trailing edge of the wing membrane joins the body well ahead of the rear legs. The dragon’s tail is thick, flat and bumpy, like that of a crocodile.

Genetics and Reproduction

Blue dragons observe elaborate courtship and mating rituals involving exchanges of food and treasure, the consent of the suzerain, and announcements to other blue dragons. Older dragons of either sex might have multiple mates, but infidelity is rare. Blue dragons are usually attentive and effective parents, and do not often leave eggs unattended. A blue dragon female gestates her 2 foot long eggs for 150 days. After laying, the egg must be incubated for 600 days before hatching. During incubation, for half of each day, the egg must be kept in a temperature of 90°F to 120°F, followed by a half day at 40°F to 60°F.

Growth Rate & Stages

They are considered wyrmlings for the first five years, fully adult at 100, and ancient at 800 years.

Ecology and Habitats

Blue dragons are native to hot, arid wastelands and deserts. They prefer sandy deserts, but can be found on dry steppes and in hot badlands. Blue dragons prefer vast underground caverns for lairs—the grander the cavern, the better—or else dig their lair into one of the towering rock formations that dominate desert landscapes. They often choose lairs at the bases of cliffs where windblown sand has accumulated. The dragon burrows through the sand to reach the caves below. If above ground, the blue dragon's lair would have two entrances: one at ground level and hidden by the sand, and one opening onto a high ledge on which it could perch and survey its territory. Most blue dragons don’t bother to keep the entrances to their lairs free of sand; they simply burrow to get in or out. Many deliberately bury the entrances to their lairs before settling down to sleep or when leaving to patrol their territory. Dungeon-dwelling blue dragons prefer fairly warm and dry areas with sand or dirt floors. Frequently, the lair also has a large subterranean cavern with a large pool of water and a sandy beach, which its inhabitant uses for drinking and relaxation. These dragons fly above their territory, using the bleak landscape and its sparse terrain features as their best chance of spotting opponents.   A blue dragon’s vibrant color makes it easy to spot in barren desert surroundings, especially when the dragon is on the ground. When it wishes to be less conspicuous, a blue dragon burrows into the sand so that only the top of its head is exposed. This trick leaves the dragon’s massive horn sticking above the surface, but from a distance the horn tends to look like a jagged rock.   Blue dragons love to soar in the hot desert air, usually flying in the daytime when temperatures are highest. Some nearly match the color of the desert sky and can be difficult to see from below.

Dietary Needs and Habits

Blue dragons are dedicated carnivores. They sometimes eat snakes, lizards, and even desert plants to sate their great hunger, but they especially prefer herd animals such as camels. When they get the chance, they gorge themselves on these creatures, which they cook with their lightning breath. This dining habit makes blue dragons a real threat to caravans crossing the desert. The dragons think of caravans as handy collections of food and treasure, all available on the same trip.   Typically, blue dragons attack from above or burrow beneath the sands until opponents come within 100 feet. Older dragons use their special abilities, in concert with these tactics to mask the land and improve their chances to surprise the target. When stalking intelligent prey, they often use ventriloquism and mimicry to confuse and divide groups before closing in for the kill. A blue dragon runs from a fight only if it is severely damaged, since all blue dragons view retreat as cowardly.

Biological Cycle

Despite their evil nature, blue dragons are actually excellent parents to their young, and rarely leave their eggs unattended. Blue dragon eggs must be buried in warm sand to incubate. Blue wyrmlings are actually quite cute, but they are quick to taunt any other creature, and even quicker to hunt small desert creatures for food.

Additional Information

Social Structure

Blue dragons have a highly developed sense of order (with themselves at the top, at least locally). The oldest blue dragon in an area acts as an overlord to all lesser blue dragons living nearby. This suzerain receives homage from its subjects and settles any disputes, particularly those involving mates or territorial boundaries.   Any blue dragon in an area can challenge the suzerain for the right to rule. This used to happen very seldom, as a blue dragon that is unhappy with its suzerain usually moved to a new area—either one with a suzerain more to its liking, or one with no suzerain at all. However, the suzerainship at the Throne of Wings is subject to frequent leadership disputes, as it is the only place for blue dragons who wish to raise their own eggs, and those who have found a place there seldom wish to give that up. The few suzerains outside of the Throne of Wings make deals with blue or other dragons for egg-laying spots within the area if they can.

Facial characteristics

A blue dragon is conspicuous by its dramatic frilled ears and a single, massive horn atop its short, blunt head. The horn juts forward from a base that takes up most of the top of the head, and it usually has two points. The primary point is slightly curved and reaches well forward, with a smaller, secondary point behind. Rows of hornlets line the dragon’s brow ridges, and run back from the nostrils (which lie close to the eyesockets) along the entire length of the head. A blue dragon has a short snout with an underslung lower jaw. It has a cluster of bladelike scales under its chin, and hornlets on its cheeks. Most of the dragon’s teeth protrude when its mouth is closed. The dragon has a short, thick neck. The head is mostly featureless when viewed from below, but the ears are visible.

Civilization and Culture

Beauty Ideals

Although they collect anything that looks valuable, blue dragons are most fond of gems—especially blue sapphires. They consider blue to be a noble hue and the most beautiful color.

Interspecies Relations and Assumptions

A blue dragon guards its territory against all potential competitors, including other monsters, especially brass dragons. Blue dragons detest brass dragons for their frivolous ways, chaotic alignment, and propensity to flee from battle.
Genetic Ancestor(s)
Genetic Descendants
Lifespan
The oldest known blue dragon died at approximately 2,300 years of age.
Average Height
12 feet
Average Weight
20,000 pounds
Average Length
55 feet, with a 20 foot long body, 14 foot long neck, and 21 foot long tail
Body Tint, Colouring and Marking
A blue dragon’s scales vary in color from an iridescent azure to a deep indigo, polished to a glossy finish by blowing desert sands. The size of its scales increases little as the dragon ages, although they do become thicker and harder. Its hide tends to hum and crackle faintly with built-up static electricity. These effects intensify when the dragon is angry or about to attack, giving off an odor of ozone and sand.

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Adult Blue Dragon

Huge dragon, lawful evil
Armor Class 19
Hit Points 225 18d12+108
Speed 40ft Fly: 80ft Burrow: 30ft

STR
25 +7
DEX
10 0
CON
23 +6
INT
16 +3
WIS
15 +2
CHA
19 +4

Saving Throws Dex +5, Con +11, Wis +7, Cha +9
Skills Perception +12, Stealth +5
Damage Immunities Lightning
Senses Blindsight 60 Ft., Darkvision 120 Ft., passive Perception 22
Languages Draconic
Challenge 16


Legendary Resistance (3/Day). If the dragon fails a saving throw, it can choose to succeed instead.   Variant: Repulsion Breath. The dragon exhales repulsion energy in a 30-foot cone. Each creature in that area must succeed on a DC 19 Strength saving throw. On a failed save, the creature is pushed 60 feet away from the dragon.   Variant: Change Shape. The dragon magically polymorphs into a humanoid or beast that has a challenge rating no higher than its own, or back into its true form. It reverts to its true form if it dies. Any equipment it is wearing or carrying is absorbed or borne by the new form (the dragon's choice). In a new form, the dragon retains its alignment, hit points, Hit Dice, resistances, immunities, ability to speak, proficiencies, Legendary Resistance, lair actions, and Intelligence, Wisdom, and Charisma scores, as well as this action. Its statistics and capabilities are otherwise replaced by those of the new form, except any class features or legendary actions of that form.


Actions

Multiattack. The dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.   Bite. Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: (2d10 + 7) piercing damage plus (1d10) lightning damage.   Claw. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: (2d6 + 7) slashing damage.   Tail. Melee Weapon Attack: +12 to hit, reach 15 ft., one target. Hit: (2d8 + 7) bludgeoning damage.   Frightful Presence. Each creature of the dragon's choice that is within 120 ft. of the dragon and aware of it must succeed on a DC 17 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the dragon's Frightful Presence for the next 24 hours.   Lightning Breath (Recharge 5-6). The dragon exhales lightning in a 90-foot line that is 5 ft. wide. Each creature in that line must make a DC 19 Dexterity saving throw, taking 66 (12d10) lightning damage on a failed save, or half as much damage on a successful one.


 

Legendary Actions

Adult Blue Dragon can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. Adult Blue Dragon regains spent legendary actions at the start of their turn.   Detect.The dragon makes a Wisdom (Perception) check.   Tail Attack.The dragon makes a tail attack.   Wing Attack (Costs 2 Actions).The dragon beats its wings. Each creature within 10 ft. of the dragon must succeed on a DC 20 Dexterity saving throw or take 14 (2d6 + 7) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.

Lair Actions

On initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects; the dragon can’t use the same effect two rounds in a row:   Part of the ceiling collapses above one creature that the dragon can see within 120 feet of it. The creature must succeed on a DC 15 Dexterity saving throw or take 10 (3d6) bludgeoning damage and be knocked prone and buried. The buried target is restrained and unable to breathe or stand up. A creature can take an action to make a DC 10 Strength check, ending the buried state on a success.   A cloud of sand swirls about in a 20-foot-radius sphere centered on a point the dragon can see within 120 feet of it. The cloud spreads around corners. Each creature in the cloud must succeed on a DC 15 Constitution saving throw or be blinded for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.   Lightning arcs, forming a 5-foot-wide line between two of the lair’s solid surfaces that the dragon can see. They must be within 120 feet of the dragon and 120 feet of each other. Each creature in that line must succeed on a DC 15 Dexterity saving throw or take 10 (3d6) lightning damage.

Blue dragons make their lairs in barren places, using their lightning breath and their burrowing ability to carve out crystallized caverns and tunnels beneath the sands.   Thunderstorms rage around a legendary blue dragon’s lair, and narrow tubes lined with glassy sand ventilate the lair, all the while avoiding the deadly sinkholes that are the dragon’s first line of defense.   A blue dragon will collapse the caverns that make up its lair if that lair is invaded. The dragon then burrows out, leaving its attackers to be crushed and suffocated. When it returns later, it collects its possessions — along with the wealth of the dead intruders.

Regional Effects

The region containing a legendary blue dragon’s lair is warped by the dragon’s magic, which creates one or more of the following effects:   Thunderstorms rage within 6 miles of the lair.   Dust Devils scour the land within 6 miles of the lair.   Hidden sinkholes form in and around the dragon’s lair. A sinkhole can be spotted from a safe distance with a successful DC 20 Wisdom (Perception) check. Otherwise, the first creature to step on the thin crust covering the sinkhole must succeed on a DC 15 Dexterity saving throw or fall 1d6 × 10 feet into the sinkhole.   If the dragon dies, the dust devils disappear immediately, and the thunderstorms abate within 1d10 days. Any sinkholes remain where they are.


This stat block is for a dragon around 100-800 years. For dragons of different age categories, check out the following:   Blue Dragon Wyrmling (5-25 years)   Young Blue Dragon (25-100 years)   Ancient Blue Dragon (800 years or older)

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