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DM Drops

Monsters / Challenge 16

Adult Blue Dragon

Huge dragon, lawful evil

Armor Class
19
Hit Points
212 (17d12 + 102)
Speed
40 ft., Burrow 30 ft., Fly 80 ft.

StrDexConIntWisCha
25 (+7)10 (+0)23 (+6)16 (+3)15 (+2)20 (+5)

Saving throws
Dex +5, Wis +7
Skills
Perception +12, Stealth +5
Immunities
lightning
Senses
Darkvision 120 ft.; Blindsight 60 ft.; Passive Perception 22
Languages
Common, Draconic
Challenge
16 (15,000 XP, or 18,000 XP in its lair); Proficiency Bonus +5

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.

Rend. Melee Attack Roll: +12, reach 10 ft. Hit: 16 (2d8 + 7) Slashing damage plus 5 (1d10) Lightning damage.

Lightning Breath. Dexterity Saving Throw: DC 19, each creature in a 90-foot-long, 5-footwide Line. Failure: 60 (11d10) 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 18):

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. The dragon can’t take this action again until the start of its next turn.

Tail Swipe. The dragon makes one Rend attack.

Stat block from the System Reference Document 5.2 (CC-BY-4.0). See credits.