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Adult Sea Dragon (Tome of Beasts 2023)

Size
Huge
Type
Dragon
Challenge Rating
18
Source
Tome of Beasts 2023
Alignment
Neutral-Evil
Armor Class
19
Speeds
60, fly 40
Walking Speed
60
Flying Speed
40
Strength Score
25
Dexterity Score
10
Constitution Score
23
Intelligence Score
17
Wisdom Score
15
Charisma Score
19
Saving Throws
Dexterity, Constitution, Wisdom, Charisma
Skill Proficiencies
Perception, Stealth
Vision
Blindsight (60ft), Darkvision (120ft)
Languages Ref
Common, Draconic, Primordial
Hit Points
275
Resistances
Immune to Cold Damage
Languages
Aethyrian Common, Draconic, Primordial

Huge dragon, Neutral Evil


Armor Class 19 (natural armor)

Hit Points 275 (22d12 + 132)

Speed 60 ft., fly 40 ft.


STR
25 (+7)
DEX
10 (+0)
CON
23 (+6)
INT
17 (+3)
WIS
15 (+2)
CHA
19 (+4)

Saving Throws Dex +6, Con +12, Wis +8, Cha +10

Skills Perception +14, Stealth +6

Damage Vulnerabilities False

Damage Resistances False

Damage Immunities cold

Condition Immunities False

Senses blindsight 60 ft., darkvision 120 ft., passive Perception 24

Languages Common, Draconic, Primordial

Challenge 18 (20,000 XP)

Amphibious. The dragon can breathe air and water.

Legendary Resistance (3/Day). If the dragon fails a saving throw, it can choose to succeed instead.

Siege Monster. The dragon deals double damage to objects and structures.

Actions

Multiattack. The dragon uses its Frightful Presence. It then makes one Bite attack and two Fin attacks.

Bite. Melee Weapon Attack: +13 to hit, reach 10 ft., one target. Hit: 18 (2d10 + 7) piercing damage plus 10 (3d6) cold damage.

Fin. Melee Weapon Attack: +13 to hit, reach 5 ft., one target. Hit: 14 (2d6 + 7) slashing damage.

Tail. Melee Weapon Attack: +13 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 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 dragon's Frightful Presence for the next 24 hours.

Tidal Breath (Recharge 5-6). The dragon exhales a crushing wave of frigid seawater in a 60-foot cone. Each creature in that area must make a DC 20 Dexterity saving throw. On a failure, the creature takes 33 (6d10) bludgeoning damage and 33 (6d10) cold damage and is pushed up to 30 feet away from the dragon and knocked prone. On a success, the creature takes half the damage and isn't pushed or knocked prone.

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 21 Dexterity saving throw or take 14 (2d6 + 7) bludgeoning damage and be knocked prone. The dragon can then move up to half its flying speed, or half its swimming speed if in the water.

Description

False

Stat block from Tome of Beasts 2023 (Kobold Press), Open Game Content used under the Open Game License 1.0a. Tome of Beasts. 2023 Open Design LLC. All rights reserved. It is not Geminaea material. See Legal.