Ancient Blue Dragon
Gargantuan Dragon lawful evil
- Armor Class: 22 (natural armor)
- Hit Points: 481 (26d20+208)
- Speed: walk 40 ft. burrow 40 ft. fly 80 ft.
- Challenge Rating: 23 (50,000 XP)
- Source: 5.1 SRD (2015 MM), page 282
| STR |
DEX |
CON |
INT |
WIS |
CHA |
| 29 (+9) |
10 (+0) |
27 (+8) |
18 (+4) |
17 (+3) |
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
Special Abilities
- 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.
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.
Legendary Actions
- 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 ft. 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.
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