Ancient Blue Dragon 5e (2024) Stat Block: AC, HP, CR, and Actions

Armor Class

Hit Points

481

(26d20 + 208)

Speed:

Walk 40 ft.,

Burrow 40 ft.,

Fly 80 ft.,

STR 29 (+9)

DEX 10 (+0)

CON 27 (+8)

INT 18 (+4)

WIS 17 (+3)

CHA 25 (+7)

Saving Throws:

DEX +7

WIS +10

Skills:

Perception +17

Stealth +7

Damage Vulnerabilities: —

Damage Resistances: —

Damage Immunities: lightning

Condition Immunities: —

Senses:

darkvision 120 ft., blindsight 60 ft.

Passive Perception:

Languages: Common, Draconic

CR:

(50000 XP) (62000 XP in lair)

Proficiency Bonus: 7

Traits:

Legendary Resistance. 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. Hit: 18 (2d8 + 9) Slashing damage plus 11 (2d10) Lightning damage.
Lightning Breath - 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):

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.

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