Arannis Liadon

Arcane Armor. Arannis Liadon wears an invisible, protective shield in combat, which works as armor. It cannot be turned off by dispel magic or other spells.

Spellcasting. Arannis Liadon is a 20th level spellcaster. Its spellcasting ability is Intelligence (spell save DC 20, +10 to hit with spell attacks). Arannis Liadon has following wizard spells prepared:
Cantrips (at will): Fire Bolt, Minor Illusion, Mage Hand, Thorn Whip.
1st level (6 slots): Catapult, Faerie Fire, Healing Word, Burning Hands.

2nd level (4 slots): Flaming Sphere, Aid, Enchance Ability.

3rd level (2 slots): Haste, Lighning Bolt, Glyph of Warding.

4rth level (1 slot): Greater Invisibility, Stoneskin, Arcane Eye.

5th level (1 slot): Cloudkill, Bigby`s Hand.

9th level (1 slot): Foresight.

All spells that deal deals acid, fire, necrotic, poison damage or are healing spells gain a bonus to the damage and healing roll equal to Arannis` Liadon`s Intelligence modifier.

Multiattack. Arannis Liadon makes two attacks of the same type, excluding spells.

Flame Tongue Chainblade. Melee Weapon Attack: +7 to hit, reach 15ft., 1 target. Hit:  8 (1d6 + 5) slashing damage +7 (2d6) fire damage.

Peacemaker V10 Revolver. RangedWeapon Attack: +9 to hit, range 60/120 ft., 1 target. Hit: 16 (2d10 + 5) piercing damage. After 6 shots requires 1 action to reload.

Wand of Lightning Bolts. (see Dungeon`s Master`s Guide for the magic item statisitics at page 211)

Ruby Eyes. No crature gains advantage on attack rolls against Arannis Liadon, also, 6 times a day, he can give himself advantage on an attack roll or disadvantage on an attack roll of the attacker.

Legendary Resistance (3/Day). If Arannis Liadon fails a saving throw, it can choose to succeed instead.

Compulsion (Costs 2 Actions): Arannis Liadon releases an invisible blast of energy, targeting one creature or object whithin 60 ft of him, which needs to make a Constitution saving throw against Arannis`s spell save DC or recieve 2d8 force damage and be knocked prone on a failed save, or half as much damage and don`t be knocked prone on a succesful one.

Attack: Arannis makes an attack with one of his weapons.

Cantrip: Arannis casts a cantrip from his spell list.