Gargantuan dragon (gem), Neutral
| Armor Class | 20 (natural armor) |
|---|---|
| Hit Points | 444 (24d20 + 192) |
| Speed | 40 ft., fly 80 ft. (hover), swim 40 ft. |
| STR | DEX | CON | INT | WIS | CHA |
|---|---|---|---|---|---|
| 26 (+8) | 14 (+2) | 27 (+8) | 26 (+8) | 19 (+4) | 23 (+6) |
| Saving Throws | Cha +13, Con +15, Dex +9, Wis +11 |
|---|---|
| Skills | Arcana +22, Perception +18, Persuasion +13, Stealth +9 |
| Damage Vulnerabilities | — |
| Damage Resistances | force; psychic |
| Damage Immunities | — |
| Condition Immunities | frightened; prone |
| Senses | blindsight 60 ft., darkvision 120 ft., passive Perception 28 |
| Languages | Common, Draconic, telepathy 120 ft. |
| Challenge | 23 |
The dragon can breathe both air and water.
If the dragon fails a saving throw, it can choose to succeed instead.
The dragon makes one Bite attack and two Claw attacks.
Melee Attack Roll: +15 to hit, reach 15 ft., one target. Hit: 19 (2d10 + 8) piercing damage plus 13 (3d8) force damage.
Melee Attack Roll: +15 to hit, reach 10 ft., one target. Hit: 15 (2d6 + 8) slashing damage.
The dragon creates a shining bead of gravitational force in its mouth, then releases the energy in a 90-foot cone. Each creature in that area must make a DC 23 Strength saving throw. On a failed save, the creature takes 63 (14d8) force damage, and its speed becomes 0 until the start of the dragon's next turn. On a successful save, the creature takes half as much damage, and its speed isn't reduced.
The dragon makes one claw attack.
The dragon uses Psychic Step or Spellcasting.
The dragon spits an amethyst that explodes at a point it can see within 60 feet of it. Each creature within a 20-foot-radius sphere centered on that point must succeed on a DC 23 Dexterity saving throw or take 18 (4d8) force damage and be knocked prone.
The dragon casts one of the following spells, requiring no spell components and using Intelligence as the spellcasting ability (spell save DC 23, +15 to hit with spell attacks):
1 each/day: blink, control water, dispel magic, freedom of movement, globe of invulnerability, plane shift, protection from evil and good, sending