Adult Topaz Dragon

Huge Dragon (gem), Chaotic Neutral

Armor Class 18 (natural armor)

Hit Points 210 (20d12 + 80)

Speed 40 ft., fly 80 ft., swim 40 ft.

STR

DEX

CON

INT

WIS

CHA

Saving Throws DEX +6, CON +9, WIS +8, CHA +9

Skills Intimidation +14, Perception +13, Stealth +6

Damage Resistances cold, necrotic

Senses blindsight 60 ft., darkvision 120 ft., passive Perception 23

Languages Common, Draconic, telepathy 120 ft.

Challenge 13 (10,000 XP)

Traits

Amphibious. The dragon can breathe both air and water.

Fabricate (1/Day). The dragon can cast fabricate, requiring no spell components and using Intelligence as the spellcasting ability.

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

Spellcasting

Spellcasting (Psionics). The dragon casts one of the following spells, requiring no spell components and using Intelligence as the spellcasting ability (spell save DC 17):

1/day each: bane, control water, create or destroy water

Actions

Multiattack. The dragon makes one Bite attack and two Claw attacks.

Bite. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit:15 (2d10 + 4) piercing damage plus 3 (1d6) necrotic damage.

Claw. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit:8 (1d8 + 4) slashing damage.

Desiccating Breath (Recharge 5–6). The dragon exhales yellowish necrotic energy in a 60-foot cone. Each creature in that area must make a DC 17 Constitution saving throw. On a failed save, the creature takes 35 (10d6) necrotic damage and is weakened until the end of its next turn. A weakened creature has disadvantage on Strength-based ability checks and Strength saving throws, and the creature's weapon attacks that rely on Strength deal half damage. On a successful save, the creature takes half as much damage and isn't weakened.

Bonus Actions

Change Shape. The dragon magically transforms into any creature that is Medium or Small, while retaining its game statistics (other than its size). This transformation ends if the dragon is reduced to 0 hit points or uses a bonus action to end it.

Psychic Step. The dragon magically teleports to an unoccupied space it can see within 60 feet of it.

Legendary Actions

Claw. The dragon makes one Claw attack.

Psionics (Costs 2 Actions). The dragon uses Psychic Step or Spellcasting.

Essential Reduction (Costs 3 Actions). The dragon targets a creature or an object not being worn or carried that it can see within 60 feet of it. The target must succeed on a DC 17 Constitution saving throw or take 28 (8d6) necrotic damage. If this damage reduces the target to 0 hit points, it crumbles to dust.

Lore

Decay and despair are bound up in the nature of topaz dragons, thanks to the necrotic energy of the Negative Plane that suffuses them. Their psionic power manifests the fundamental entropic principle that mortal beings and their creations are ultimately doomed to death and decomposition, and the dragons' demeanor is typically morbid and curmudgeonly as a result.