Bill Nikata (Nika)

Unpredictable form. Nika's body takes the shape of his own will. At any time his body can become any size category and gains the following traits. Nika gains all traits from medium to tiny and from medium to gargantuan (for example traits while tiny he gains all traits from if he were small and medium. If an trait were to buff or reduce damage done the more powerful trait is applied instead)

Tiny:  Nika's strength becomes 5 and his dex becomes 30. Nika takes no damage from dex based spells and all attacks against him are done at disadvantage and do not gain any benefits from having advantage (such as flanking). While this size damage done by Nika is reduced to 5 per hit. If nika lands a critical hit the damage is increased to 10 instead . 

Small: Nika's strength becomes 10 and his dex is 25. Nika has advantage on all dex saving throws and takes no damage from dex based saving throws if he passes them. When Nika performs an Attack action on his turn , he can reduce his hit bonuses to a minimum of 5 for that turn and take that many extra attacks on his turn. While this size damage done by Nika is reduced by 5. 

Medium: Nikas stats are normal, he gains a flying speed of 60ft but automatically lands at the end of his turn. Nika takes no fall damage from falling from up to 200 ft. 

Large: Nika's strength becomes 22 and his dex becomes 18. Nika can grapple creature's 2 size categories larger than himself and does so at advantage. Nika can use grappled creatures and melee weapon attacks during his turn. These attacks Crit on a 19 or 20 and his damage die increases to d8s (bludgeoning damage only).

Huge: Nika's strength becomes 25 and his dex becomes 15. Nika gains advantage on all strength based skills and saves, and gains advantage on attack rolls. Nika Crits on an 18,19 or 20 and his damage die increases to d10s (bludgeoning damage only). Nika makes dex based saves and checks at disadvantage and makes one less attack while in this form. 

Gargantuan: Nika's strength becomes 30 and his dex 10. Nika cannot be grappled and takes no damage from any strength saving throw. Nika Crits on a 17,18,19 or 20 and his damage die increases to d12s (bludgeoning damage only). If there are creatures within 5 ft of Nika's target when he attacks thoes creatures are attacked as well and take half the damage (this excludes specialty attacks) . Nika cannot make any more than 2 attacks per turn. Nika fails all dex based saving throws. 

Limited reflective body: If Nika would be the target of the magic missile spell, pass a saving throw from a spell and the roll on the dice was a 20, or take an attack from a spell where the roll on the dice was 10 or lower, roll a d6. On a 1 to 5, Nika is unaffected. On a 6, Nika is unaffected, and the spell is reflected back at the caster as though it originated from Nika, turning the caster into the target.

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

Legendary resistance 4/day: If Nika would fail a saving throw he can choose to pass it instead.

Drums of Liberation: Nika`s body beats with the drums of freedom, which heal him for 2d12+10 at the start of his turn. If this healing were to be prevented, the healing is reduced by 5 instead. The reductions stack. 

Contagious laughter: At the beginning of combat and at the beginning of Nika`s turn each creature within 500ft of Nika must make a DC 21 Wisdom saving throw or become charmed by Nika`s laughter. While charmed Creatures must dance while moving reducing their total movement by half. Attack rolls made against Nika are done at Disadvantage. At the end of the creatures turn they can remake the save. Upon successfully passing the save, they make all saves for for this effect at Advantage for next 24 hours. If a creature has 3 successful saves they become immune to this effect for 24 hours.

Armor of Liberation: Nika has a natural armor that changes with the elements. If Nika is hit by an attack that deals damage that is not from a weapon he gains resistance to that damage after the first instance of damage. The resistances and immunities Nika gains reset at the end of Nika`s turn. 

Liberation from Liberation (Mythic proc): When Nika Is reduced to 0 hit points he sheds his material form. Nika`s HP becomes 500, and gains bonus to his Saving throws equal to his charisma modifier and half of that to his total AC (+10 to saves +5 to AC. Nika gains the Chaos world trait. If Nika is reduced to 0 Hp During this time he instead goes to 1 hp and becomes immune to all damage until a long rest, Nika cannot take attack actions after being reduced to 0 hp this way. Nika is no longer bound by the size requirements of his Supernatural feats 

Chaos world: Nika gains control of the world around him and is able to hit any target he sees as long as they are within his line of sight, These attacks are counted as if Nika is within 5ft of the target and are treated as Melee attacks. 

Multi attack: Nika makes a minimum of 2 Attacks on his turn but makes 3 attacks normally. Nika can replace his last attack on his turn with a specialized attack. Nika Can forgo his entire attack action to perform a supernatural feat  

Fists of Liberation. Melee Weapon Attack: +15 to hit, reach 5-15ft., 1 target. Hit: 18 (3d6 + 8) Bludgeoning damage. 

The feet of freedom. RangedWeapon Attack: +15 to hit, range 50ft ft., 1 target. Hit: 15 (2d6+8) Bludgeoning damage.

Specialized attack 

Bring down the hierarchy:  Nika raises his foot 400ft in the air and brings it down on a single target +15 to hit, reach 5-15ft., 1 target. Hit: 21 (4d6 + 8) Bludgeoning damage. On a hit the target must make a Dc 22 Strength saving throw or be knocked Prone. If a creature is knocked prone this way they must make another Strength saving throw at the beginning of their turn, on a failed save they use all of their movement to get back up. on a successful save they are able to get back up normally. 

Flames of Liberation: Nika ignites his last attack with the fiery heat of liberation making a melee attack against one target. On hit the creature takes an additional 3d6 fire damage. 

Bringing down the Doors: Nika`s fist becomes Gargantuan and launches the fist at unreasonable speed against a single target. The target takes an additional 3d6 bludgeoning damage and is knocked 30ft in one direction. 

Knocking out the King: Nika Grabs the shoulders of his target and sends his own head 50 ft back, launching it at the target. On hit the target takes an additional 3d6 bludgeoning damage and must make a DC 20 con save or be knocked unconscious until the end of their next turn.

Supernatural feats 

Flames of the sun: Nika grabs a chunk of the Sun and slams it into the ground up to 60 ft away from himself causing a 15ft sphere explosion of flame . Each creature within the blast must make a DC 21 Dex save or take 4d10 radiant damage and 4d10 fire damage. Nika cannot perform this attack if he is smaller than medium size (Ignored if Liberation from liberation is triggered). 

Call upon the lighting: Nika Grabs a bolt of lighting and slams a creature he can see within 15 ft of himself. Nika makes a normal melee attack that deals an additional 2d6 Lightning damage and forces the creature to make a Dc 20 Con save or take 6d6 lighting damage and become Paralyzed until the end of their next turn, or half the lighting damage on a successful save. If Nika is Gargantuan he can hit multiple creatures as long as they are within 15ft of the main target. the additional targets for this attack ignore the Unpredictable form trait. Nika cannot perform this trait if he is smaller than medium size (Ignored if Liberation from liberation is triggered).

Let them spin and dance: Nika wraps around a creature and spins them like a top. The creature must make a DC 21 Dex save or be spun uncontrollably taking 6d6 Force damage and spun 45ft in a direction of Nika`s choosing or half on a successful save and not be spun uncontrollably. The spinning creates a small tornado that pulls things in within 30 ft of it. At the beginning of a creature's turn if they are within 30 ft of the tornado they must make a DC 20 Strength save or be pulled into the tornado taking 4d6 bludgeoning damage and being shot out 40ft in a random direction taking no fall damage. At the start of the affected creature's turn they must make a Dc 20 con save or take an additional 4d6 force damage and be incapacitated until the beginning of their next turn. Nika cannot perform this attack if he is Medium or larger (Ignored if Liberation from liberation is triggered). The damage dealt by this attack ignores traits from Unpredictable form.

Second wind : Nika can use his bonus action to regain 1d10+20 hit points. Once he uses this he cannot do so until a short or long rest. 

Lay on hands: Nika can use his bonus action to heal himself or another for up to 100  hit points. Nika can use this to Revive a creature that has been killed but needs to use a minimum of 50 lay on hands. Nika can only do this if he is in Liberation from Liberation. Once he uses this feature he cannot do so again until a long rest. Nika can forgo his own vitality (hp) to use this feature again but only for 50hp. 

Superior Deflect missile: If Nika were to be hit with a ranged attack including spells, he can use his reaction to reduce that damage by 4d6 + 10. If he reduces the attack to 0 he is able to throw the attack back at the creature with a +10 to hit dealing the same damage he would have been dealt.

Rubberized protection: If Nika were to take a Critical hit from an attack that is not fire, slashing, or piercing damage  , he can use his reaction to nullify the critical hit.

 Nika can take up to 4 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. Nika regains spent legendary actions at the start of his turn. 

Beating like a drum (1 action): Nika lets his own heart beat freely sending shockwaves 30ft from himself. Each creature within that range makes a DC 18 con save or be knocked back 45ft and take 4d6 thunder damage or half as much on a successful save. this damage increases to d8s - 12s if Nika is large -Gargantuan. 

Blow away (1 action) : Nika inhales air and blows its in a direction he chooses, flying up to 45 ft away from where he was. Nika does not provoke opportunity attacks while doing this. 

Something a little special (2 actions): Nika performs a specialized attack.

Supernatural Supernatural feat (4 actions): Nika performs one of his supernatural feats.

If Nika`s Mythic trait is active, he can use the following actions below as legendary actions. Nika gains 2 more actions this way (6 total). 

Let the world rumble like a drum (2 actions): Nika beats the ground like drums as the world twists and bends to the beat. Each creature within 100 ft of Nika must make a dc 21 strength save or be knocked prone and take 6d6 thunder damage. If a creature is flying they fall to the ground and are also knocked prone. 

Bury them for the new world (3 actions): Nika grabs the very earth and drives into a creature he can see within 100 ft of himself. Nika makes a melee attack on a creature. On hit they take 4d6 bludgeoning damage and the creature must make a dc 21 strength save. On a failed save the creature is buried 45ft underground and takes 2d6 force damage at the end of their turn. While buried a creature is blinded and they can only use their action to dig their way out at half movement and follow the suffocation rules. Another creature can use their action to help using half their movement to dig where the creature was sucked in. 

Let them all feel Liberation (6 actions): Nika summons lighting and earth to help him bounce around hitting every creature within 100 ft of Nika. Nika makes a number of attacks equal to the number of creatures within 100 ft of Nika. Each creature that Nika hits takes 3d6+8 Bludgeoning damage plus 4d8+8 thunder damage. If Nika lands a critical hit with this attack Nika deals an additional 2d6 and 2d8 of bludgeoning and thunder damage (total of 8d6 and 10d8).