Adult Blue Dragon
Huge dragon, lawful evil
Armor Class 19 (Natural Armor)
Hit Points 225 (18d12 + 108)
Speed 40 ft., burrow 30 ft., fly 80 ft.
STR DEX CON INT WIS CHA 25 10 23 16 15 19 (+7) (+0) (+6) (+3) (+2) (+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.
Cultist
Medium Humanoid (Any Race), Any Non-Good Alignment
Armor Class 12 (leather armor)
Hit Points 9 (2d8)
Speed 30 ft.
STR DEX CON INT WIS CHA 11 12 10 10 11 10 (+0) (+1) (+0) (+0) (+0) (+0) Skills Deception +2, Religion +2
Senses Passive Perception 10
Languages Any one language (usually Common)
Challenge 1/8 (25 XP)
Dark Devotion. The cultist has advantage on saving throws against being charmed or frightened.
Actions
Scimitar. Melee Weapon Attack: +3 to hit, reach 5 ft., one creature. Hit: 4 (1d6 + 1) slashing damage.
Kobold
Small Humanoid (Kobold), Lawful Evil
Armor Class 12
Hit Points 5 (2d6 - 2)
Speed 30 ft.
STR DEX CON INT WIS CHA 7 15 9 8 7 8 (-2) (+2) (-1) (-1) (-2) (-1) Senses Darkvision 60 ft., Passive Perception 8
Languages Common, Draconic
Challenge 1/8 (25 XP)
Sunlight Sensitivity. While in sunlight, the kobold has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.
Pack Tactics. The kobold has advantage on an attack roll against a creature if at least one of the kobold's allies is within 5 feet of the creature and the ally isn't incapacitated.
Actions
Dagger. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 4 (1d4 + 2) piercing damage.
Sling. Ranged Weapon Attack: +4 to hit, range 30/120 ft., one target. Hit: 4 (1d4 + 2) bludgeoning damage.