Alasario, The Mirror

Topsy Turvy. All attack rolls to hit Alasario and all saving throws against Alasario's spells and magical effects must be below Alasario's AC or Save DC. An attack roll of 1 will count as a Critical Hit to hit Alasario. Typical Critical Hit rolls will still count as misses.

Contrary. All spells that would affect Alasario's AC, to hit, damage, and save DCs have the opposite effect.

Magic Resistance. Alasario has Advantage on all saving throws against spells and other magical effects.

Will of Glass. Alasario has 3 Mirror Spheres (maximum of 5) orbiting him, giving him various bonuses during combat. Spheres can be targeted by spells and attacks that do not require saving throws. They have the same AC, resistances, and to hit rule as Alasario, and are immune to Area of Effect spells, but shatter after taking 25 damage in a single instance of damage or being hit by a 5th level or higher spell. Upon shattering, the Mirror Sphere deals half the rolled damage, rounded down, as Magical Slashing damage to Alasario and all creatures within 15ft of him.

Spellblade: Alasario can add Intelligence to all of his attack to hit and damage modifiers. Mirror Shot does not have disadvantage on attack rolls against targets within 5ft of Alasario.

Glamor: Alasario has a number of reactions equal to the number of Mirror Spheres he has available. Only 1 of these reactions can be used cast a spell or to make an Opportunity Attack, and that attack must be Mirror Shot.

Soul Window: Alasario can Concentrate on 2 spells at once and has Advantage on checks to maintain Concentration.

Spellcasting. Alasario is a 17th level spellcaster. His spellcasting ability is Intelligence (spell save DC 12, +12 to hit with spell attacks). He has the following wizard spells prepared:

At Will: Confusion, Defenestration (at 4th level), Enemies Abound, Haste, Shatter (at 5th level), Shield (lowers AC by 5)

3/Day: Crown of Stars (at 7th level), Far Step, Fizban's Platinum Shield, Jallarzi's Storm of Radiance

1/Day: Befuddlement, Weird

Multiattack. Alasario makes a number of Shard attacks or Mirror Shots equal to the amount of Mirror Spheres orbiting him. Any one attack can be replaced by a spell.

Shard. Melee Attack Roll: +15, reach 5ft. Hit: 24 (2d8 + 15) Magical Slashing damage. On hit, make a Constitution Saving Throw: DC12, taking an additional 11(1d8+7) Necrotic damage on a failure.

Mirror Shot. Ranged Attack Roll: +15, range 120ft, Hit: 25 (4d4 + 15) Radiant damage. 

Blitz. Alasario doubles his movement speed and doesn't provoke Opportunity Attacks while moving. Upon reaching his destination, Alasario makes a Shard attack.

Shine. Alasario regains 13 (3d8) hit points.

Glass Shaping. Alasario shapes one of the shattered mirrors around him into a new Mirror Sphere after successfully landing a Mirror Shot attack. Can only summon one Mirror Sphere in this way per turn.

Glisten. Upon being targeted by a spell, Alasario forces the targeting creature to stare into a Mirror Sphere and make a Wisdom Saving Throw: DC12, causing the spell to dissipate on a failure. 

Sacrifice. When Alasario is hit with an attack or damaging spell, he can use a Mirror Sphere to absorb the triggering attack or spell. If the attack or spell would cause the Mirror Sphere to shatter, the damage is dealt as describe in Will of Glass. Can't be used on a spell that Alasario attempted to block with Glisten.

Alasario can take 3 Legendary Actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature's turn. Alasario regains spent legendary actions at the start of its turn.

Shard (Costs 1 Action). Alasario makes a Shard attack. 

Mirror Shot (Costs 1 Action). Alasario makes a Mirror Shot attack.

Sphere Maximo (Costs 3 Actions). Alasario summons Mirror Spheres until he is at his maximum.

Alasario has 2 Mythic Actions that activate upon becoming Bloodied for the first time and upon reaching 0 hit points.

Radiant Reflection (When Bloodied). Alasario increases his maximum Mirror Sphere count to 8 and immediately summons 5 Mirror Spheres. Alasario unleashes a radiant blast from his body, forcing all creatures within 60ft to make a Constitution Saving Throw: DC14, taking 51 (8d8 + 15) Radiant damage on a failure and being Pushed 15ft away from Alasario on a failure, or half damage and no movement on a success.

Shattering Star (Upon hitting 0 hit points). Alasario causes his body, all mirrors, and all Mirror Spheres that are still intact around him to explode in a rain of shattered glass. All creatures within the cathedral must make a Dexterity Saving Throw: DC12, taking 42(4d10+20) Slashing damage on a failure, or half as much on a success, and make a Constiution Saving Throw: DC12, taking 9(2d4+4) Radiant damage per Mirror Sphere. This damage ignores all resistances and penetrates all barriers, except for those made using a spell of 7th level or higher that completely surrounds a creature.