Adult Blue Dragon

Huge dragon, lawful evil

  • Armor Class 19
  • Hit Points 225 (18d12+108)
  • Speed 40 ft., burrow 30 ft., fly 80 ft.

STR
25 (+7) 

DEX
10 (+0) 

CON
23 (+6) 

INT
16 (+3) 

WIS
15 (+2) 

CHA
19 (+4)

  • Saving Throws Dex +5, Con +11, Wis +7, Cha +9
  • Skills Perception +12, Stealth +5
  • Damage Immunities Lightning
  • Senses Blindsight 60 Ft., Darkvision 120 Ft., passive Perception 22
  • Languages Common, Draconic
  • Challenge 16 (15,000 XP)
  • 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: +12 to hit, reach 10 ft., one target. Hit: (2d10 + 7) piercing damage plus (1d10)lightning damage.
  • Claw. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: (2d6 + 7) slashing damage.
  • Tail. Melee Weapon Attack: +12 to hit, reach 15 ft., one target. Hit: (2d8 + 7) bludgeoning damage.
  • Frightful Presence. Each creature of the dragon’s choice that is within 120 ft. of the dragon and aware of it must succeed on a DC 17 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 90-foot line that is 5 ft. wide. Each creature in that line must make a DC 19 Dexterity saving throw, taking 66 (12d10) lightning damage on a failed save, or half as much damage on a successful one.

Legendary Actions

Adult 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. Adult Blue Dragon regains spent legendary actions at the start of their 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 10 ft. of the dragon must succeed on a DC 20 Dexterity saving throw or take 14 (2d6 + 7) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.