Azdana “Projection”

Projection of a Legion Commander. When reduced to 0 hit points, the projection crumbles into ash and bone fragments instead of dying. No remains can be resurrected.

Colossal presence. The projection  can move through spaces occupied by Large or smaller creatures. Those creatures must succeed on a DC 18 Strength save or take 14 (4d6) bludgeoning damage and be knocked prone.

Siege Monster. Deals double damage to structures and objects.

Multiattack. The Projection makes four attacks in any combination, two antler cleaves, 2 crushing arms, or replace one attack with centipede swing.

Antler Cleave. Melee Attack Roll: +11, reach 15 ft. Hit: 21 (4d6+7) Slashing damage, if the target is large or smaller it must succeed on a DC 18 strength saving throw or be hurled back 15 feet.

Crushing Arm. Melee Attack Roll: +11, reach 10 ft. Hit: 17 (3d6+7) Bludgeoning damage, the target is grappled with a DC 18 escape dc, a grappled creature can be thrown 30 feet as a bonus action.

Centipede Sweep (Recharge 5–6). Dexterity Saving Throw: DC 18, each creature in a 25-foot-wide cone. Failure: 27 (6d8) Bludgeoning damage, knocked prone and pushed 20 feet Success: Half damage.

Cataclysmic Charge (Recharge 5-6). Moves up to its speed Dexterity Saving Throw: DC 18, Failure: 31 (7d8) Bludgeoning damage, knocked prone, pushed to nearest empty space. Success: no damage.

destroy all buildings in way.

Earthbreaker Stomp (Recharge 6). Dexterity Saving Throw: DC 18, each creature in a 40-foot-wide area. Failure: 36 (8d8) Bludgeoning damage, knocked prone. Success: no damage.

structures all destroy.

Spellcasting. The dragon casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 21, +13 to hit with spell attacks):

At Will: Detect Magic, Fear, Melf’s Acid Arrow (level 4 version)
1/Day Each: Create Undead, Speak with Dead, Vitriolic Sphere (level 5 version)

Fourfold Assault If Azdana damages at least two different creatures during its turn, it may immediately make one additional Crushing Arm attack.

Trample. Whenever a creature leaves Azdana’s reach, it may move up to 10 feet without provoking opportunity attacks and make an Antler Cleave.

Legendary Actions (3/Turn)

 Crushing Step, Move up to half speed. Every creature moved adjacent to takes 7 (2d6) bludgeoning damage.

Arm Sweep. Make one Crushing Arm attack.

Collapse the Earth (Costs 2) Ground erupts in a 15-foot-radius area within 60 feet. Creatures inside make a DC 18 Dexterity save. Failure: 18 (4d8) bludgeoning and fall prone.

Endless Legs (Costs 3) Move up to full speed. Opportunity attacks against Azdana have disadvantage. Every creature within 5 feet of the movement path takes 10 (3d6) bludgeoning damage.