Aetherian Dragon Construct

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

Multiattack. The Aetherian Dragon Construct can use its Soul Shunt. It then 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) force 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.

Soul Shunt. Each creature of the Aetherian Dragon Construct's choice that is within 120 feet of the Aetherian Dragon Construct and aware of it must succeed on a DC 14 Wisdom saving throw or become unconscious for 1 round.  If a creature's saving throw is successful or the effect ends for it, the creature is immune to the Aetherian Dragon Construct's Soul Shunt for the next 24 hours.

Force Breath (Recharge 5–6). The Aetherian Dragon Construct exhales a sparkling pink and white blast in a 120 by 15-foot line. Each creature in that area must make a DC 19 Dexterity saving throw, taking 54 (12d8) force damage on a failed save, or half as much damage on a successful one.

The Aetherian Dragon Construct 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 Aetherian Dragon Construct regains spent legendary actions at the start of its turn.

Detect. The Aetherian Dragon Construct makes a Wisdom (Perception) check.

Tail Attack. The Aetherian Dragon Construct makes a tail attack.

Wing Attack (Costs 2 Actions). The Aetherian Dragon Construct 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 Aetherian Dragon Construct can then fly up to half its flying speed.