Aethyrios, The Midnight Auric Paragon

Summer Archfey Infusion. Aethyrios is considered both a dragon and a fey. Magical darkness within 120 feet of him is suppressed, and hostile illusion magic has disadvantage on attack rolls and saving throw DCs in that area.

Paragon of Midnight Light. Allies within 60 feet of Aethyrios have advantage on saving throws against spells and regain 15 hit points at the start of their turn if they have at least 1 hit point.

Starlit Wings. Opportunity attacks against Aethyrios are made with disadvantage. While flying, he sheds dim blue-gold light in a 60-foot radius. Allies in the light gain advantage on Wisdom saving throws.

Duality Unbroken. Aethyrios has advantage on saving throws against effects that would alter his alignment, compel obedience, or dominate his will.

Legendary Resistance (4/Day). If Aethyrios fails a saving throw, he can choose to succeed instead.

Unusual Nature. Aethyrios doesn’t require food or drink.

Multiattack. Aethyrios makes three attacks: one with his bite and two with his claws, or two claws and one tail attack.

Bite. Melee Weapon Attack: +19 to hit, reach 15 ft., one target.
Hit: 38 (4d12 + 10) piercing damage plus 18 (4d8) radiant damage.

Claw. Melee Weapon Attack: +19 to hit, reach 10 ft., one target.
Hit: 28 (4d8 + 10) slashing damage.

Tail. Melee Weapon Attack: +19 to hit, reach 25 ft., one target.
Hit: 32 (4d10 + 10) bludgeoning damage, DC 27 Strength save or prone.

Breath Weapons (Recharge 5–6)

Aethyrios can use either breath weapon.

🔥 Breath of Solar Judgment. Aethyrios exhales divine flame in a 120-foot cone.DC 27 Dexterity save. Failure: 110 (20d10) fire and radiant damage. Success: Half damage. Creatures of evil alignment have disadvantage on the save.

🌫️ Breath of Starlit Repose. Aethyrios exhales shimmering night-mist in a 90-foot cone. Enemies must succeed on a DC 27 Wisdom save or be restrained by gravity and light until the end of their next turn. Allies instead regain 80 (20d8) hit points and end one charm, fear, or stun effect

Change Shape. Aethyrios magically transforms into any creature that is Medium or Small, while retaining its game statistics (other than its size). This transformation ends if the dragon is reduced to 0 hit points or uses its action to end it.

Aethyrios can take 3 legendary actions.

Auric Wingbeat. Creatures within 20 feet take 21 (6d6) radiant damage and must succeed on a DC 27 Dex save or be knocked prone.

Starlight Glide. Aethyrios moves up to half his flying speed without provoking opportunity attacks.

Judgment of the Just (Costs 2 Actions). One creature within 120 feet must make a DC 27 Cha save or take 36 (8d8) radiant damage; allies instead gain advantage on their next roll.

Avatar of Summer Night

When Aethyrios is reduced to 0 HP, his scales flare like a living constellation. He regains 400 HP, and the battlefield becomes Eternal Summer Night.

Effects:

• Hostile magic deals half damage

• Allies regain 20 HP at the start of their turns

• Aethyrios’ breath weapons recharge immediately

• He gains one additional legendary action per round