Ancient Amethyst Dragon

Gargantuan dragon, neutral evil

Armor Class

22 (natural armor)

Hit Points

276 (24d20 + 24)

Speed

40 ft., fly 80 ft. (hover)

STR

22 (+6)

DEX

25 (+7)

CON

12 (+1)

INT

26 (+8)

WIS

16 (+3)

CHA

23 (+6)

Damage Immunities

fire, lightning

Damage Resistances

bludgeoning, slashing, and piercing from nonmagical attacks

Senses

blindsight 60 ft., darkvision 120 ft., passive Perception 27

Saving Throws

Dex +14, Int +15, Wis +10, Cha +13

Skills

Arcana +15, Insight +10, Perception +10, Religion +15

Languages

Common, Draconic, telepathy 120 ft.

Challenge

22 (41,000 XP)

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

Feedback Aura. Each time the dragon takes damage, all creatures within 30 feet must succeed on a DC 23 Intelligence saving throw or else take 14 (4d6) psychic damage.

Psionics

Charges: 24

Recharge: 1d10

Fracture: 27

Actions

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

Bite. Melee Weapon Attack: +13 to hit, reach 15 ft., one target. Hit: 17 (2d10 + 6) piercing damage.

Claw. Melee Weapon Attack: +13 to hit, reach 10 ft., one target. Hit: 13 (2d6 + 6) slashing damage.

Tail. Melee Weapon Attack: +13 to hit; reach 20 ft., one target. Hit: 15 (2d8 + 6) bludgeoning damage.

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.

Psionics. The dragon uses a psionic ability.

Psionic Shift (Costs 2 Actions). The dragon releases a wave of telekinetic energy from its mind. Every creature within 15 feet must make a DC 24 Intelligence saving throw or take 15 (2d6 + 8) force damage and be knocked prone. The dragon then can move up to half its movement speed.

Lair Actions

On initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects. The dragon can’t use the same effect two rounds in a row.

The dragon manifests believe at no cost.
The dragon manifests forget at no cost. If it forces the target to forget a spell, the dragon knows that spell and can cast it using Intelligence as its spellcasting ability, with a DC of 23.
The dragon manifests an illusion of a shifting battlefield. The terrain within 30 feet of it is considered difficult terrain until the end of the dragon’s next turn.

Regional Effects

Intelligent creatures who sleep within 12 miles of an amethyst dragon’s lair dream of an opulent party with a charming host to whom they willingly and happily reveal their deepest secrets.