Magic resistance. The dragon has advantage on saving throws against spells and other magical effects.

Innate Spellcasting. The dragon's innate spellcasting ability is Intelligence, (spell save DC 13, +5 to hit with spell attacks). It can innately cast the following spells, requiring no material components:

At will: faerie fire, fog cloud

3/day each: charm person, cure wounds, disguise self

1/day each: dimension door

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

Bite. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 14 (2d10 + 3) piercing damage.

Claw. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) slashing damage.

Acid Breath (Recharge 5–6). The dragon exhales acid in a 60­-foot line that is 5 feet wide. Each creature in that line must make a DC 16 Dexterity saving throw, taking 55 (10d10) acid damage on a failed save, or half as much damage on a successful one.

Poison Breath (Recharge 5–6). The dragon exhales poison in a 30­-foot cone. Each creature in that area must make a DC 14 Constitution saving throw, taking 45 (10d8) poison damage on a failed save, or half as much damage on a successful one.