Keen Sight and Smell. The dragon has advantage on Wisdom (Perception) checks that rely on sight or smell.

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

Pounce. If the dragon moves at least 30 feet straight toward a creature and then hits it with a claw attack on the same turn, that target must succeed on a DC 19 Strength saving throw or be knocked prone. If the target is prone, the dragon can make one bite attack against it as a bonus action.

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

Bite. Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 17 (2d10 + 6) piercing damage plus 4 (1d8) fire damage.

Claw. Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 13 (2d6 + 6) slashing damage.

Tail. Melee Weapon Attack: +11 to hit, reach 15 ft., one target. Hit: 15 (2d8 + 6) bludgeoning damage.

Fire Breath (Recharge 5–6). The dragon exhales fire in a 60-foot cone. Each creature in that area must make a DC 19 Dexterity saving throw, taking 54 (12d8) fire damage on a failed save, or half as much damage on a successful one.

The dragon can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The dragon regains spent legendary actions at the start of its turn.

Detect. The dragon makes a Wisdom (Perception) check.

Attack. The dragon makes one melee attack.

Wing Attack (Costs 2 Actions). The dragon beats its wings. Each creature within 10 feet of the dragon must succeed on a DC 19 Dexterity saving throw or take 13 (2d6 + 6) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.