Adult Blue Dragon Monster D&D 5e (5th Edition)

Adult Blue Dragons are monster creatures that are extremely territorial. Taking advantage of their blue skin, they tend to hunt on cloudless days where they camouflage with the open skies. They make their caves in deserted areas using their lightning breath and burrowing ability, thus allowing them to live isolated and in peace.


  • Legendary Resistance(3/Day): When the adult blue dragon fails to perform a successful saving throw, it can change its outcome and make sure it succeeds instead.


  • Multiattack: The adult blue dragon 5e gets to use its action, Frightful Presence after which it is followed by three attacks – one with a bite and the other two with its claws.
  • Bite: Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit: 18 (2d10 + 7) piercing damage plus 5 (1d10) lightning damage.
  • Claw: Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 14 (2d6 + 7) slashing damage.
  • Tail: Melee Weapon Attack: +12 to hit, reach 15 ft., one target. Hit: 16 (2d8 + 7) bludgeoning damage.
  • Frightful Presence: Any creature of the dragon’s will (within 120 ft range of the dragon and aware of it)  must complete a DC 17 Wisdom saving throw successfully or it will get frightened for a minute. The creature gets to perform the saving throw after each of its turns, the effect will end instantly on a successful throw. After the effect ends or the creature successfully performs a saving throw to end it, it then gains immunity to Frightful presence for the next 24 hours.
  • Lightning Breath(Recharge 5-6): The dnd 5e adult blue dragon blows out lightning in a 90 feet area ahead of it with a width of 5 ft. All creatures on its path will have to make a DC 19 saving throw, they will take 66(12d10) lightning damage if the save fails and half of the damage if the saving throw is successful.

Legendary Actions

The 5e adult blue dragon can choose any of the 3 legendary actions from below for itself. Just one can be used at a specific time and only after another creature’s turn. Legendary Actions used will refresh for re-use on the creature’s next turn.

  • Detect: A wisdom(perception) check is performed by the dragon.
  • Tail Attack: The dragon uses its tail to attack.
  • Wing Attack (Costs 2 Actions): The dragon flaps its wings aggressively. Any creature near 10 ft. of the dragon will have to take a DC 20 Dexterity saving throw successfully otherwise take 14(2d6 +7) inflicting damage and be knocked to proneness. The dragon will be able to fly for half its flying speed after this.

Adult Blue Dragon 5e Monsters Attributes

AC 19
Lawful Evil
CHA 19
CON 23
Challenge Rating
DEX 10
225 (18d12+108)
INT 16
Common, Draconic
Passive Perception
Roll 0
Bite 1d20 + 12 2d10+7+1d10
Roll 1
Claw 1d20 + 12 2d6+7
Roll 2
Tail 1d20 + 12 2d8+7
Roll 3
Lightning Breath 1d20 + 0 12d10
Saving Throws
Dex +5, Con +11, Wis +7, Cha +9
Blindsight 60 Ft., Darkvision 120 Ft.
Perception +12, Stealth +5
40 ft., burrow 30 ft., fly 80 ft.


This was created to help you learn all about the Adult Blue Dragon by covering the ins and outs of its role in the game. To check out more creatures or learn about Dungeons and Dragons 5th edition, look at other articles on the site. If you would like to know about giant poisonous snake 5e then go with the link.

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