Angelic Weapons. The solar's weapon attacks are magical. When the solar hits with any weapon, the weapon deals an extra 6d8 fire damage (included in the attack).

Divine Awareness. The solar knows if it hears a lie.

Innate Spellcasting. The solar's spellcasting ability is Charisma (spell save DC 25). It can innately cast the following spells, requiring no material components:

At will: detect evil and good, invisibility (self only)

3/day each: blade barrier, dispel evil and good, resurrection

1/day each: commune, control weather

Magic Resistance. The solar has advantage on saving throws against spells and other magical effects.

Multiattack. The Fallen solar makes two greatsword attacks.

Greatsword. Melee Weapon Attack: +15 to hit, reach 5 ft., one target. Hit: 22 (4d6 + 8) slashing damage plus 27 (6d8) fire damage.

Destroying Longbow. Ranged Weapon Attack: +13 to hit, range 150/600 ft., one target. Hit: 15 (2d12 + 3) piercing damage plus 27 (6d8) fire damage. If the target is a creature that has 100 hit points or fewer, it must succeed on a DC 15 Constitution saving throw or die.

Flying Sword. The solar releases its greatsword to hover magically in an unoccupied space within 5 feet of it. If the solar can see the sword, the solar can mentally command it as a bonus action to fly up to 50 feet and either make one attack against a target or return to the solar's hands. If the hovering sword is targeted by any effect, the solar is considered to be holding it.

Burning Touch (4/Day). The solar touches another creature. The target takes 40 (8d8 + 4) [fire] damage 

fiery Gaze (Costs 3 Actions). The solar targets one creature it can see within 30 feet of it. If the target can see it, the target must succeed on a DC 15 Constitution saving throw or be blinded until magic such as the [Tooltip Not Found] spell removes the blindness.