Ancient Blue Dragon
Gargantuan dragon, lawful evil
- Armor Class
- 22 (natural armor)
- Hit Points
- 481 (26d20+208)
- Speed
- walk 40 ft., burrow 40 ft., fly 80 ft.
- Challenge
- 23 (50,000 XP)
- Proficiency Bonus
- +7
- Saving Throws
- Dex +7, Con +15, Wis +10, Cha +12
- Skills
- Perception +17, Stealth +7
- Damage Immunities
- lightning
- Senses
- blindsight 60 ft., darkvision 120 ft., passive Perception 27
- Languages
- Common, Draconic
Ability Scores
Traits
Legendary Resistance (3/Day)
If the dragon fails a saving throw, it can choose to succeed instead.
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: +16 to hit, reach 15 ft., one target. Hit: 20 (2d10 + 9) piercing damage plus 11 (2d10) lightning damage.
Claw
Melee Weapon Attack: +16 to hit, reach 10 ft., one target. Hit: 16 (2d6 + 9) slashing damage.
Tail
Melee Weapon Attack: +16 to hit, reach 20 ft., one target. Hit: 18 (2d8 + 9) bludgeoning damage.
Frightful Presence
Each creature of the dragon's choice that is within 120 feet of the dragon and aware of it must succeed on a DC 20 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 120-foot line that is 10 feet wide. Each creature in that line must make a DC 23 Dexterity saving throw, taking 88 (16d10) lightning damage on a failed save, or half as much damage on a successful one.
Legendary Actions
The ancient 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. The ancient blue dragon regains spent legendary actions at the start of its 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 15 ft. of the dragon must succeed on a DC 24 Dexterity saving throw or take 16 (2d6 + 9) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.
Run your campaign on Tiny RPG
Tiny RPG is a free D&D campaign manager — build encounters, keep session notes, and map your world in one place. Browse the full SRD bestiary or start a campaign.
Start a free campaignFrequently asked questions
What is Ancient Blue Dragon's challenge rating in D&D 5e?
Ancient Blue Dragon is a CR 23 monster, worth 50,000 XP.
What are Ancient Blue Dragon's armor class and hit points?
Ancient Blue Dragon has an armor class of 22 (natural armor) and 481 hit points (26d20+208).
What type of creature is Ancient Blue Dragon?
Ancient Blue Dragon is a gargantuan dragon, lawful evil.