Adult Blue Dracolich

Huge undead, lawful evil
Armor Class
19
Hit Points
18d12 + 108 (225)
Speed
walk
40 ft.
fly
80 ft.
burrow
30 ft.

STR
25 (+7)
DEX
10 (+0)
CON
23 (+6)
INT
16 (+3)
WIS
15 (+2)
CHA
19 (+4)

Senses blindsight 60 ft., darkvision 120 ft., passive Perception 22
Languages Common, Draconic
Challenge 17 (18,000XP)

Damage Resistances
necrotic
Damage Immunities
lightning, poison
Condition Immunities
charmed, exhaustion, frightened, paralyzed, poisoned

Special Abilities

Legendary Resistance (3/Day)

If the dracolich fails a saving throw, it can choose to succeed instead.

Magic Resistance

The dracolich has advantage on saving throws against spells and other magical effects.

Actions

Multiattack

The dracolich 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 dracolich's choice that is within 120 feet of the dracolich and aware of it must succeed on a DC 18 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 dracolich's Frightful Presence for the next 24 hours.

Lightning Breath (Recharge 5-6)

The dracolich exhales lightning in a 90-foot line that is 5 feet wide. Each creature in that line must make a DC 20 Dexterity saving throw, taking 66 (12d10) lightning damage on a failed save, or half as much damage on a successful one.

Legendary Actions

Detect

The dracolich makes a Wisdom (Perception) check.

Tail Attack

The dracolich makes a tail attack.

Wing Attack (Costs 2 Actions)

The dracolich beats its tattered wings. Each creature within 10 ft. of the dracolich must succeed on a DC 21 Dexterity saving throw or take 14 (2d6 + 7) bludgeoning damage and be knocked prone. After beating its wings this way, the dracolich can fly up to half its flying speed.