Ancient Blue Dragon 2024

CR 23 dragon

Gargantuan dragon, lawful evil

Armor Class: 22 (natural armor)
Hit Points: 481 (26d20 + 208)
Speed: 40 ft., fly 80 ft., burrow 40 ft.
Initiative: +14

STR29 (+9)

DEX10 (+0)

CON27 (+8)

INT18 (+4)

WIS17 (+3)

CHA25 (+7)

Saving Throws: Strength +9, Dexterity +7, Constitution +8, Intelligence +4, Wisdom +10, Charisma +7
Skills: Perception +17, Stealth +7
Damage Immunities: lightning
Senses: blindsight 60 ft., darkvision 120 ft., passive Perception 27
Languages: Common, Draconic
Challenge: 23 (50,000 XP) · Proficiency Bonus +7

Legendary Resistance (4/Day, or 5/Day in Lair).

If the dragon fails a saving throw, it can choose to succeed instead.

Actions

Multiattack.

The dragon makes three Rend attacks. It can replace one attack with a use of Spellcasting to cast Shatter (level 3 version).

Rend.

Melee Attack Roll: +16, reach 15 ft. 18 (2d8 + 9) Slashing damage plus 11 (2d10) Lightning damage.

Lightning Breath (Recharge 5–6).

Dexterity Saving Throw: DC 23, each creature in a 120-foot-long, 10-foot-wide Line. Failure: 88 (16d10) Lightning damage. Success: Half damage.

Spellcasting.

The dragon casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 22):

At Will: Detect Magic, Invisibility, Mage Hand, Shatter
1/Day Each: Scrying, Sending

Legendary Actions

Cloaked Flight.

The dragon uses Spellcasting to cast Invisibility on itself, and it can fly up to half its Fly Speed. The dragon can't take this action again until the start of its next turn.

Sonic Boom.

The dragon uses Spellcasting to cast Shatter (level 3 version). The dragon can't take this action again until the start of its next turn.

Tail Swipe.

The dragon makes one Rend attack.

Other versions

A5E Ancient Blue Dragon · A5E Monstrous Menagerie 2014 Ancient Blue Dragon · Black Flag 2014 Ancient Blue Dragon · SRD 5.1

Source: System Reference Document 5.2 (Wizards of the Coast) · License: Creative Commons Attribution 4.0 details