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Blue Dragon

Blue Dragon, Ancient

Gargantuan dragon, lawful evil
Armor Class 22 (natural armor)
Hit Points 481 26d20+208
Speed 40ft Fly: 80ft Burrow: 40ft

STR
29 +9
DEX
10 0
CON
27 +8
INT
18 +4
WIS
17 +3
CHA
21 +5

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
Challenge 23 (50,000 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: +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 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 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 feet 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.



Blue Dragon, Adult

Huge dragon, lawful evil
Armor Class 19 (natural armor)
Hit Points 225 18d12+108
Speed 40ft Fly: 80ft Burrow: 30ft

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: 18 2d10+7 piercing damage plus 5 1d10 lightning damage.

Claw. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 14 2d6+7 slashing damage.

Tail. Melee Weapon Attack: +12 to hit, reach 15 ft., one target. Hit: 16 2d8+7 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 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 feet 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

The 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 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 10 feet 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.



Blue Dragon, Young

Large dragon, lawful evil
Armor Class 18 (natural armor)
Hit Points 152 16d10+64
Speed 40ft Fly: 80ft Burrow: 20ft

STR
21 +5
DEX
10 0
CON
19 +4
INT
14 +2
WIS
13 +1
CHA
17 +3

Saving Throws Dex +4, Con +8, Wis +5, Cha +7
Skills Perception +9, Stealth +4
Damage Immunities lightning
Senses blindsight 30 ft., darkvision 120 ft., passive Perception 19
Languages Common, Draconic
Challenge 9 (5,000 XP)


Actions

Multiattack. The dragon makes three attacks: one with its bite and two with its claws.

Bite. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 16 2d10+5 piercing damage plus 5 1d10 lightning damage.

Claw. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 12 2d6+5 slashing damage.

Lightning Breath (Recharge 5-6). The dragon exhales lightning in an 60-foot line that is 5 feet wide. Each creature in that line must make a DC 16 Dexterity saving throw, taking 55 10d10 lightning damage on a failed save, or half as much damage on a successful one.


 

Blue Dragon, Wyrmling

Medium dragon, lawful evil
Armor Class 17 (natural armor)
Hit Points 52 8d8+16
Speed 30ft Fly: 60ft Burrow: 15ft

STR
17 +3
DEX
10 0
CON
15 +2
INT
12 +1
WIS
11 0
CHA
15 +2

Saving Throws Dex +2, Con +4, Wis +2, Cha +4
Skills Perception +4, Stealth +2
Damage Immunities lightning
Senses blindsight 10 ft., darkvision 60 ft., passive Perception 14
Languages Draconic
Challenge 3 (700 XP)


Actions

Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 8 1d10+3 piercing damage plus 3 1d6 lightning damage.

Lightning Breath (Recharge 5-6). The dragon exhales lightning in a 30-foot line that is 5 feet wide. Each creature in that line must make a DC 12 Dexterity saving throw, taking 22 4d10 lightning damage on a failed save, or half as much damage on a successful one.


 
Blue dragons make their lairs in barren places, using their lightning breath and their burrowing ability to carve out crystallized caverns and tunnels beneath the sands.   Thunderstorms rage around a legendary blue dragon’s lair, and narrow tubes lined with glassy sand ventilate the lair, all the while avoiding the deadly sinkholes that are the dragon’s first line of defense.   A blue dragon will collapse the caverns that make up its lair if that lair is invaded. The dragon then burrows out, leaving its attackers to be crushed and suffocated. When it returns later, it collects its possessions — along with the wealth of the dead intruders.


Cover image: Kadeth Header by Nightflyer0ne

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