Amphibious. The dragon can breathe air and water.

Multiattack. The dragon makes three attacks: one with its Bite and two with its Claw or three with its Arcane Burst.

Bite. Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 15 (2d10 + 4) piercing damage plus 7 (2d6) poison damage.

Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 4) slashing damage.

Arcane Burst. Melee or Ranged Spell Attack: +6 to hit, reach 5 ft. or range 120 ft., one target. Hit: 19 (3d10 + 3) psychic damage.

Spellcasting. The dragon casts one of the following spells, using Intelligence as the spellcasting ability (spell save DC 14):

At will: friends, mage hand, message

2/day each: charm person, mage armor, hold person, invisibility, suggestion, tongues

Poison Breath (Recharge 5–6). The dragon exhales poisonous gas in a 30-foot cone. Each creature in that area must make a DC 14 Constitution saving throw, taking 42 (12d6) poison damage on a failed save, or half as much damage on a successful one.

Humanoid Form. The dragon magically transforms into any humanoid 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.

Instinctive Charm (Recharge 4–6). When a visible creature within 30 feet of the dragon makes an attack roll against it, the dragon forces the attacker to make a DC 14 Wisdom saving throw. On a failed save, the attacker redirects the attack roll to the creature closest to it, other than the dragon or itself. If multiple eligible creatures are closest, the attacker chooses which one to target.