Multiattack. The dragon can use its Frightful Presence. It then makes three attacks; one with its bite and two with its claws. Bite. Melee Weapon Attack: +16 to hit, reach 15ft., one target. Hit: 20 (2d10 + 9) piercing damage. b]Claw. Melee Weapon Attack: +16 to hit, reach 10ft., one target. Hit: 16 (2d6 + 9) slashing damage. Tail. Melee Weapon Attack: +16 to hit, reach 20ft., one target. Hit: 18 (2d8 + 9) bludgeoning damage. Frightful Presence. Each creature of the dragon's choice that is within 120 feet of the dragon and aware of it must succeed on a DC 22 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends it, the creature is immune to the dragon's Frightful Presence for the next 24 hours. Sand Breath (Recharge 5-6). The dragon exhales blinding hot sand in a 90-foot line that is 10 feet wide. Each creature in that line must make a DC 22 Dexterity saving throw. On a failed save the creature is blinded and takes 71 (13d10) piercing damage. On a successful save the creature takes half as much damage and is not blinded. A blind creature can repeat the save at the end of each of its turns, ending the blindness on a success.
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. Tail Attack. The dragon makes a tail attack. Wing Attack (Costs 2 Actions). The dragon beats its wings. Each creature within 15 feet of the dragon must succeed on a DC 24 Dexterity saving throw or take 16 (2d6 + 9) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.