Huge Dragon, Typically Chaotic Neutral
AC 19 (natural armor)    Initiative +12 (22)
HP 212 (17d12 + 102)
Speed 40 ft., Fly 80 ft., Swim 40 ft.
Mod Save
STR 22 +6 +6
DEX 14 +2 +7
CON 22 +6 +11
Mod Save
INT 16 +3 +3
WIS 17 +3 +8
CHA 18 +4 +9
Skills Intimidation +9, Perception +13, Stealth +7
Resistances Cold, Necrotic
Senses Blindsight 60 ft., Darkvision 120 ft.; Passive Perception 23
Languages Common, Draconic, Telepathy 120 ft.
CR 13 (XP 10,000, or 11,500 in lair; PB +5)
Traits

Amphibious. The dragon can breathe air and water.

Spider Climb. The dragon can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

Sanguine Awareness. The dragon knows the location of each creature within 120 feet of it that isn’t at its hit point maximum.

Aura of Hemorrhage. Creatures of the dragon’s choice within 20 feet of it that aren’t at their hit point maximum take 10 (3d6) necrotic damage at the start of their turns.

Legendary Resistance (3/Day; 4/Day in Lair). If the dragon fails a saving throw, it can choose to succeed instead.

Actions

Multiattack. The dragon makes three attacks: one Bite attack and two Claw attacks.

Bite. Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 17 (2d10 + 6) piercing damage plus 9 (2d8) necrotic damage. If the target isn’t at its hit point maximum, the dragon regains hit points equal to the necrotic damage dealt.

Claw. Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 13 (2d6 + 6) slashing damage.

Blood Breath (Recharge 5–6). The dragon exhales destabilizing, blood-red energy in a 60-foot cone. Each creature in that area must make a DC 18 Constitution saving throw. On a failed save, a creature takes 45 (10d8) necrotic damage, and the dragon regains hit points equal to half the necrotic damage dealt. On a successful save, a creature takes half as much damage, and the dragon doesn’t regain hit points from that creature.

A creature that fails the saving throw has its blood destabilized until the end of its next turn. The next time it takes damage before then, it takes an extra 10 (3d6) necrotic damage, and it can’t regain hit points until the end of its next turn.

 

Bonus Actions

Sanguine Command (Recharge 5–6). The dragon targets up to two creatures it can see within 60 feet that aren’t at their hit point maximum. Each target must succeed on a DC 17 Wisdom saving throw or be influenced until the end of the dragon’s next turn. While influenced, a creature has disadvantage on attack rolls against the dragon and must use its movement to move closer to the dragon if able.

Change Shape. The dragon magically transforms into a Medium or Small creature, or back into its true form. While in a new form, the dragon retains its game statistics, except its size. Any equipment it is wearing or carrying transforms with it. It reverts to its true form if it dies.

 

Legendary Actions

The dragon can take 3 legendary actions (4 in its lair), choosing from the options below. Only one option can be used at a time and only at the end of another creature’s turn. The dragon regains spent legendary actions at the start of its turn.

Claw. The dragon makes one Claw attack.

Siphon Vitality (Costs 2 Actions). The dragon targets one creature within 30 feet that isn’t at its hit point maximum. The target takes 14 (4d6) necrotic damage, and the dragon regains hit points equal to the damage dealt.

Blood Surge (Costs 3 Actions). The dragon causes volatile energy to erupt from a creature within 60 feet that isn’t at its hit point maximum. The target must succeed on a DC 18 Constitution saving throw or take 21 (6d6) necrotic damage, and each creature within 10 feet of it takes 10 (3d6) necrotic damage.

Description

An adult blood dragon is a terrifying vision of control and contained violence—a creature that no longer merely hunts, but dominates the flow of battle itself.

Its body is long, powerful, and unnervingly lean for its size, built not just for strength but for precision. Its scales are deep crimson, darkening toward black along the edges, layered like armor over a living current. Between those scales, glowing veins pulse visibly, tracing slow, rhythmic patterns across its chest, neck, and wings—like a second circulatory system just beneath the surface.

With each breath, that glow intensifies.

Its wings are broad but thin, almost membrane-like, with faint red energy flowing through them like branching arteries. When spread, they cast a silhouette that feels less like a beast and more like something designed—a predator shaped by purpose.

Its eyes are no longer merely predatory—they are calculating. They track not just movement, but weakness: uneven breathing, slowed reactions, the subtle signs of fatigue or injury. To an adult blood dragon, every creature is a system to be read… and broken.

When it exhales its breath weapon, the air warps with a deep crimson distortion. The energy doesn’t burn—it unravels, leaving behind wounds that resist healing and bodies that falter under their own failing vitality.


🧠 Mind & Behavior

By adulthood, a blood dragon has developed from a hunter into a tactician of living systems.

It does not rush into combat unless it chooses to.

Instead, it:

  • observes from range
  • identifies the strongest threats
  • creates openings through calculated pressure
  • then dismantles opponents one by one

It prefers to fight where it has control—terrain, positioning, and timing all matter.

A typical engagement looks like this:

  1. It weakens multiple enemies at once
  2. Forces movement and poor positioning
  3. Focuses wounded targets with relentless precision
  4. Sustains itself through the fight while opponents degrade

It rarely overcommits. It rarely panics.

And it almost never wastes effort.


🩸 Mastery of Blood and Vitality

At this stage, the dragon’s connection to blood has become something closer to environmental influence than simple predation.

It can:

  • sense wounded creatures across large distances
  • accelerate the breakdown of injuries
  • disrupt natural healing processes
  • draw vitality from multiple sources at once
  • manipulate weakened minds to reposition prey

Its presence alone begins to alter the battlefield. Wounded creatures feel their strength slipping faster than it should, their recovery delayed, their bodies working against them.

To fight an adult blood dragon is not just to fight a creature—

It is to fight the collapse of your own endurance.


🧬 Origins & Theories

Scholars who survive encounters with adult blood dragons often revise their earlier assumptions.

These creatures are not simply mutated dragons or magical anomalies. They appear to follow a distinct evolutionary path, one that becomes more refined and deliberate with age.

The leading theories include:

⚔️ Battlefield Apex Evolution

Blood dragons may have evolved in environments saturated with conflict, adapting over generations into creatures that not only survive battle—but optimize it.

🔮 Vitality-Linked Magic

Their abilities may stem from a rare form of magic tied not to life or death, but to the stability of living systems—the balance between injury and recovery.

🌑 Primordial Design

Some believe blood dragons are expressions of an ancient force that governs attrition, survival, and inevitable decline—not destruction, but the slow failure of strength over time.


🧩 Role in the World

Adult blood dragons begin to shape entire regions around their presence.

Unlike traditional dragons, they do not seek isolated lairs filled with treasure. Instead, they establish dominance over areas where conflict is constant or easily sustained:

  • war-torn kingdoms
  • monster-infested territories
  • contested borders
  • regions plagued by recurring violence

In these places, the dragon thrives.

Some have even been known to:

  • subtly encourage conflict between factions
  • allow enemies to weaken each other before intervening
  • follow armies or adventuring groups across great distances
  • establish “feeding grounds” where violence never fully ends

To an adult blood dragon, stability is undesirable.

Conflict is nourishment.


🧍 Shapechanging & Interaction

With maturity comes the ability to take humanoid form—not as a disguise for hiding, but as a tool for influence.

In alternate forms, a blood dragon may:

  • infiltrate political structures
  • manipulate leaders into war
  • subtly escalate tensions between groups
  • observe potential prey without revealing itself

Unlike more social dragons, it does not seek companionship or admiration. Its interactions are purposeful, controlled, and often temporary.

If it speaks, it does so with unsettling clarity—its words precise, its tone calm, its intent hidden beneath layers of implication.


☠️ Rumors & Hooks

  • A war that should have ended months ago continues inexplicably, with both sides suffering increasing losses
  • Wounded soldiers report feeling watched—even miles from the battlefield
  • A mysterious advisor has been pushing a ruler toward increasingly aggressive decisions
  • Entire regions seem unable to recover from conflict, as if something is preventing wounds—both literal and political—from healing

Previous Versions

Name Date Modified Views Adds Version Actions
5/3/2026 7:39:06 AM
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Coming Soon

Habitat: UnderdarkUrban

Treasure:  Any

WilliamTaylor7652

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