Actions

Multiattack. The aspect can use its Frightful Presence. It then makes three attacks: one with its bite, one with its claws, and one tail attack   Bite. Melee Weapon Attack: +19 to hit, reach 20 ft., one target. Hit: (2d12 + 10) piercing damage plus (4d10) force damage. If the attack hits a creature, the target must make a DC 27 (8 + Prof + Cha) Wisdom saving throw or become frightened of teh aspect until the end of its next turn.   Claw. Melee Weapon Attack: +19 to hit, reach 15 ft., one target. Hit: (2d10 + 10) slashing damage. If the target is a Huge or smaller creature, it is grappled (escape DC 29 (10+Athletics)) and is restrained until this grapple ends. The aspect can only have one creature grappled this way at a time.   Tail. Melee Weapon Attack: +19 to hit, reach 25 ft., one target. Hit: (2d12 + 10) bludgeoning damage. If the target is a creature, it must make a DC 27 (8 +Prof + Str) Strength saving throw or be knocked prone   Breath Weapon (Recharge 5-6). The aspect uses one of the following breathe weapons.   Platinum Breathe. The aspect exhales platinum flames in a 300-foot cone. Each creature in that area must make a DC 27 (8 + Prof + Str) Dexterity saving throw, taking 104 (19d10) radiant damage on a failed save, or half as much damage on a successful one.   Exalting Breathe. The aspect exhales restorative winds in a 300-foot cone. Each creature of the aspects choice regains 71 (13d10) hit points, and each creature of the aspect's choice that has been dead for no longer 1 minute is restored to life with all it's hit points.  

Bonus Action

Change Shape. The dragon magically polymorphs into a Humanoid or beast that has a Challenge rating no higher than its own, or back into its true form. It reverts to its true form if it dies. Any Equipment it is wearing or carrying is absorbed or borne by the new form (the dragon's choice). In a new form, the Dragon retains its Alignment, Hit Points, Hit Dice, ability to speak, Proficiencies, Legendary Resistance, lair Actions, and Intelligence, Wisdom, and Charisma scores, as well as this action. Its Statistics and capabilities are otherwise replaced by those of the new form, except any Class Features or legendary Actions of that form.

Legendary Actions

The aspect 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 aspect regains spent legendary actions at the start of their turn.   Detect. The dragon makes a Wisdom (Perception) check.   Attack. The dragon makes a claw or tail attack.   Wing Attack (Costs 2 Actions). The dragon beats its wings. Each creature within 30 ft. of the dragon must succeed on a DC 27 (8 + Prof + Str) Dexterity saving throw or take 17 (2d6 + 10) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.  

Mythic Actions

If the aspect's Draconic Awakening trait has activated in the last hour, it can use the options below as legendary actions.   Bite. The aspect makes a bite attack.   Celestial Shield (Costs 2 Actions). The aspect manifests 5 spectral greatwyrms around himself that protect him; he 75 temporary hit points until the start of his next turn.   Celestial Lance (Costs 3 Actions). The aspect conjures four enormous lances of magical force that plummet to ground at four different points he can see within 150 feet of it and then disappear. Each creature in 20-foot-radius, 100-foot-high cylinder cenetered on each point must succeed on a DC 27 (8 + Prof + Wis), Dexterity saving throw or take 24 (7d6) force damage. A creature in the area of more than one lance is only effected once.