Brisinarion, The Dragon Breaker

Boon of Immortality. Brisinarion is immune to any effect that would age him, and he can’t die from old age.

Legendary Resistance (5/Day). If Brisinarion fails a saving throw, he can choose to succeed instead.

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

Dragonrift (Recharge 5–6). Brisinarion opens a momentary Dragonrift within 120 feet of him. The rift is a 50-foot-radius portal. Each creature in that area must make a DC 22 Constitution saving throw, taking 70 (10d12) force damage on a failed save, or half as much damage on a successful one. In addition, an incopreal Ancient Red Dragon, Ancient Blue Dragon, Ancient Black Dragon, Ancient Green Dragon or Ancient White Dragon,appears in unoccupied spaces in the sphere. They act as Brisinarion's allies, and take their turns immediately after his, They remain until they die or until Brisinarion dismisses them as an action. Brisinarion may only have one of each type of dragon summoned at a time.

Prismatic Aura: Anyone starting or ending their turn withing 60 ft of Brisinarion or those that choose to move through spaces within that range from Brisinarion suffer effects as if they had walked through a Prismatic Wall. Brisinarion is resistant to ranged attacks

Storm of the Dragon Breaker (Mythic Trait; Recharges after a Short or Long Rest): If Brisinarion is reduced to 0 hit points, he doesn’t die or fall unconscious. Instead, he radiates prismatic light that transforms the weather around him into a violent storm of energy. Brisinarion gains 660 health. He is surrounded by a prismatic miasma that also gives him 100 temporary hit points. Anyone within 120 ft of Brisinarion when this happens suffers effects as if they had walked through a Prismatic Wall. Any dragons summoned by him are immiedeatly dismissed by this violent storm and one of each of the five types are sumoned simultaneously at full health at the end of Brisinarion's turn. Each may take thier turn Immediately. 

 Special Equipment. Brisinarion Wears Obsidian Flint Dragon Plate. and wields a Ruinshard Longsword that is also a Vorpal Sword.

Font of Fey-Sorcerery. 30 Sorcery points

• Quickened Spell. When Brisinarion casts a spell that has a casting time of 1 action, he can spend 2 sorcery points to change the casting time to 1 bonus action for this casting
• Distant Spell. When Brisinarion casts a spell that has a range of 5 feet or greater, he can spend 1 sorcery point to double the range of the spell. When Brisinarion casts a spell that has a range of touch, he can spend 1 sorcery point to make the range of the spell 30 feet.

Spellcasting. Brisinarion casts one of the following spells, requiring no material components and using Charisma as the spellcasting ability (spell save DC 24, +16 to hit with spell attacks):

At will: Gravity Sinkhole, Pulse wave, Chaos Bolt,

5/day each: Disintegrate,  Gravity Fissure, haste, Power Word Stun,

3/day each: Prismatic Spray, teleport, Power Word Kill,

Multiattack. Brisinarion can make four weapon attacks and cast a spell each turn.

Ruinshard Vorpal Longsword. Melee Weapon Attack: +16 to hit, reach 5 ft., one target. Hit: 32 (4d8 + 16) slashing damage, or  (4d10 + 16) slashing damage if used with two hands, plus 20 (4d10) force damage. When Brisinarion attacks a creature that has at least one head with this weapon and roll a 20 on the attack roll, he cuts off one of the creature's heads. 

Ruinshard bolt. (Recharge 5–6). Ranged Weapon Attack: +16 to hit, range 150/600 ft., one target. Hit: 40 (4d10 + 20) force damage

Fey Step. Brisinarion teleports, along with any equipment he is wearing or carrying, to an unoccupied space he can see within 120 feet of him.

Negate Spell (5/Day). When Brisinarion sees a creature within 60 feet of him casting a spell, he tries to interrupt it. If the creature is casting a spell using a spell slot of 8th level or lower, its spell fails and has no effect. If it is casting a 9th-level spell, it must succeed on a DC 25 Intelligence saving throw, or the spells fails and has no effect.

Brisinarion 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. He regains spent legendary actions at the start of his turn.

Prismatic magic. Brisinarion uses Spellcasting or Fey Step.

Dictum of Prisms (Costs 2 Actions). Brisinarion utters a phrase of Condemnation in Primordial and targets up to 5 creatures he can see within 60 feet of him. Each target must succeed on a DC 22 Wisdom saving throw or take 40 (4d10+20) force damage and be frightened of Fearg'Luaithre for 1 minute.

Storm of the Dragon Breaker (Recharge 5–6)  If Brisinarion's mythic trait is active, as a bonus action he may channel the churning storm around him. Lightning flashes in the area, thunder booms, and strong winds roar. Each creature under the cloud (no more than 5,000 feet beneath the cloud) when it appears must make a Constitution saving throw. On a failed save, a creature takes 10d6 thunder damage and becomes deafened for 5 minutes. Each round for 5 rounds after Brisinarion may use one of the following as a free action. (saves are DC: 25)

• Blinding Rain: Sleeting rain falls from the cloud. Each creature and object under the cloud takes 12d6 force damage. they must succeed on a Con save or be [Tooltip Not Found]..
• Ruinbolts: Brisinarion call ten bolts of lightning from the cloud to strike ten creatures or objects of its choice beneath the cloud. A given creature or object can't be struck by more than one bolt. A struck creature must make a Dexterity saving throw. The creature takes 4d10+20 force damage on a failed save, or half as much damage on a successful one.
• Gale Winds: winds force huge and smaller creatures back, knocking them [Tooltip Not Found]. unless thet pass a Str save and makeing flight impossible. Brisinarion and his Dragons are immune to this.
• Dragonthunder- The roar of dragons long broken echos through the storm and deals 10d6 damage to everyone within 120 ft of Brisinarion and makes them Stunned unless they pass a Con save.