Cedric Lavellani; Headmaster of The Gulthia University

Evasion. If Cedric is subjected to an effect that allows him to make a Dexterity saving throw to take only half damage, he instead takes no damage if he succeeds on the saving throw and only half damage if he fails, provided he isn’t incapacitated.

Destined Pair: While holding both Epiphany and Axiom, Cedric ignores the loading properties of Axiom, and cannot have Epiphany disarmed from him without his mental consent.

Determined Strike: Once per Day Cedric can grant himself a +5 to an attack roll with Epiphany. This can be added after knowing if an attack misses or not. This ability also lets Cedric cast Lightning Bolt through Axiom once per day. This is cast at 8th level. (DC 20 DEX save, 13d6 lightning damage)

Ring of Invisibility: Using a ring in his possession, Cedric can freely turn Invisible as an action.

Practised Senses: Cedric has +18 to his Insight, Perception, Persuasion, Stealth, and Deception Checks, & a +23 to his Sleight of Hand checks. He also rolls with a +20 bonus to his initiative. 

Multi-attack: Cedric has 2 attack actions per turn.

Epiphany: Cedric's Trusty Rapier. +12 to hit, dealing 1d8+12 magical piercing damage. While holding Axiom, if Cedric critically hits with Epiphany he can attack with Axiom -at advantage - without expending an action. This weapon can be used with Cedric's bonus action: Truth and Revelation.

Axiom: Cedric's Trusty Pistol. +12 to hit, dealing 1d10+12 magical piercing damage. While holding Epiphany, Cedric critically hits with Axiom on an 18, 19, & 20 on the die. After critically hitting with Epiphany, Cedric can take a shot with Axiom - at advantage - without expending an action. This weapon can be used with Cedric's bonus action: Truth and Revelation.

Limited Spell-casting: Cedric has access to a few spells from his days as a Bard, detailed below. His spell save DC is 20, and his spell attack bonus is +12, with a +6 spell modifier.
1st Level (4 Slots): Command

2nd Level (3 Slots): Command, Mirror Image

3rd Level (3 Slots): Command, Slow

Counter-charm: As an action, Cedric can perform until the end of his next turn. During that time, Cedric and any friendly creatures within 30 ft. that can hear him gain advantage on saving throws against being frightened or charmed.

Panache: As an action, Cedric can make a Persuasion check contested by a creature’s Insight check. On success, a hostile creature has disadvantage on attack rolls against targets and can't make opportunity attacks against targets other than Cedric for 1 minute, or until one of his allies engages it or it gets more than 60 ft. from Cedric. If it isn't hostile, it is charmed by Cedric for 1 minute.

Truth and Revelation: After attacking using a weapon with the intrinsic perk Truth and Revelation, Cedric can use a bonus action to attack with the other.

Bardic Inspiration: As a bonus action, a creature (other than Cedric) within 60 ft. that can hear him gains an inspiration die (1d8). For 10 minutes, the creature can add it to one ability check, attack roll, or saving throw. This can be added after seeing the roll, but before knowing the outcome. Cedric can do this 6 times per long rest.

Cunning Action: Cedric can take a bonus action on each of his turns to take the Dash, Disengage, or Hide action.

Elegant Manoeuvre: Cedric can use a bonus action on his turn to gain advantage on the next Acrobatics or Athletics check he makes during the same turn.

Steady Aim: As a bonus action, Cedric can give himself advantage on his next attack roll on the current turn. He can use this bonus action only if he hasn’t moved during this turn, and after he uses the bonus action, his speed is 0 until the end of the current turn.

Uncanny Dodge. Cedric halves the damage that he takes from an attack that hits him. Cedric must be able to see the attacker.

Cedric has 3 Legendary Actions, that refill for every 40HP he loses.

Hark of The Pariah: Cedric can turn into his first mythic form, Pariah of Akatari, at the end of another creatures turn if the HP requirement is met.

Riposte: If a creature attacked Cedric, and only Cedric, on its turn, Cedric can attack once with either Axiom or Epiphany in retaliation.

On Tempo: If Cedric can move without taking attack of opportunity attacks, he can move his full 40ft of movement as he wishes.

Pariah of Akatari, Arbiter of Gulthias.

Cedric unveils what lies beneath his half-theatre mask - his face distorted and melding into tree-like bark, resulting in actual foliage where his hair should be. Cracks in this bark reveal glowing and actively flowing veins that ebb with an otherworldly power. What would be a normally eye is now something much darker. Inky black has replaced all the white, and a crackling storm of red energy forms what would be the iris.

All the veins than run through his body begin to glow a faint red, visible through his now semi-translucent skin. The branches growing out from behind him grow in size and in their aggressiveness, jutting out at sharp angles.

Mechanically, upon becoming desperate and cornered, or dropping below 50HP, Cedric enters his Pariah of Akatari state. Once this form is felled, he regains 60HP and returns; in his Arbiter of Gulthias state.

PARIAH:

While in his Pariah State, all of Cedric's attacks gain an additional 1d4 to their attack rolls, and restore HP equal to half their damage dealt.

The Pariah's Deathsong: +12 to hit, dealing 2d8+2 slashing damage. This attack can be made 3 times per turn by Cedric. The Deathsong is a long, slender wooden blade Pariah Cedric can manifest freely. It does not count as a Truth and Revelation weapon.

Floral Detonation: +12 to hit, with 120ft of range, dealing either 2d12+2 radiant or necrotic damage. Floral Detonation appears as Cedric firing black and red petaled flowers from his arm towards his foe.

Rosenfall Cleave: +13 to hit 15ft range; piercing through a medium or smaller target and suspending them 10ft off the ground. This attack deals 3d12+8 piercing damage, and causes the target to be Restrained. This condition lasts until more than 40 points of damage is done to Cedric in-between turns.

ARBITER:

While in this state, Cedric's size grows to that of a Huge creature, his appendages becoming more tree-like and his body splintering open into more violent and stormy cracks.

Seasonal Boon: Cedric makes all of his Pariah attacks at advantage, with each dealing an additional 2d4 points of irresistible damage for every combat round he is in this form for.

Keep track of how long Cedric is in this form for, as when combat ends (or when he chooses to leave this form), roll a d100, taking off from 100 double the number of rounds he is in the Arbiter form for - (So if he is in this form for 7 combat rounds, the DC on the following d100 would be 1-86). After this calculation, roll 1d100. If the dice land in that ballpark Cedric can revert as normal, but if not - he enters a deadly rage; recklessly attacking until death. 

Promised Reverence: If Cedric dies in his Arbiter form, his body will slowly start to become a Gulthias Tree.