Armor Class 18 (natural armor)
Hit Points 168 (16d10 + 80)
Speed 40 ft., fly 80 ft., swim 40 ft.
Saving Throws DEX +5, CON +9, WIS +6, CHA +8
Skills Arcana +12, Perception +10, Persuasion +8, Stealth +5
Damage Resistances force, psychic
Condition Immunities frightened, prone
Senses blindsight 30 ft., darkvision 120 ft., passive Perception 20
Languages Common, Draconic, telepathy 120 ft.
Challenge 9
Amphibious. The dragon can breathe both air and water.
Multiattack. The dragon makes one Bite attack and two Claw attacks.
Bite. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 16 (2d10 + 5) piercing damage plus 4 (1d8) force damage.
Claw. Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 9 (1d8 + 5) slashing damage.
Singularity Breath (Recharge 5–6). The dragon creates a shining bead of gravitational force in its mouth, then releases the energy in a 30-foot cone. Each creature in that area must make a DC 17 Strength saving throw. On a failed save, the creature takes 36 (8d8) 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.
Fizban's Treasury of Dragons, p. 161