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

Dance of the Serpent. Youwe has 2 Bonus Actions per turn and can use Dexterity instead of Strength for the attack and damage rolls of his melee weapon attacks. After every melee weapon attack Youwe can spend a Bonus Action to do a Tail attack.

Draconic Ki. Youwe has 30 ki points, that he can spend in various features. When he spends a ki point it's unavailable until the end of the day.

Flurry of knives: Immediately after Youwe takes the Attack action his turn, he can spend 1 ki point to make two attacks with his claws. Hit: 14 (1d4 + 10) piercing damage.

One with the wind: Youwe can spend 1 ki point to take the Dodge, Dash or Disengage action as a bonus action on his turn.

Ki Paws: Youwe melee weapon attacks count as magical for the purpose of overcoming resistance and immunity to nonmagical attacks and damage.  When he hits another creature with a melee weapon attack, he can spend 1 ki point to attempt a stunning strike. The target must succeed on a Constitution saving throw or be stunned until the end of his next turn.

Evasion:  When Youwe is subjected to an effect that allows him to make a Dexterity saving throw to take only half damage, he can spend a ki point to instead take no damage if he succeeds on the saving throw, and only half damage if he fails.

Pure Scales. Youwe AC equals 20 + his Wisdom modifier.

Extract Aspects  (9/Day). Whenever Youwe hits a single creature with one of the attacks granted by his Flurry of Blows, he learns the creature's Damage Vulnerabilities, Damage Resistances, Damage Immunities, and Condition Immunities.

Exorth Truth.  If Youwe manage to hit a single creature with two or more attacks in one round, he can spend 1 ki point to force them to make a Charisma saving throw. He can choose to have these attacks deal no damage. On a failed save, the creature is unable to speak a deliberate lie for 1 minute and all Charisma checks directed at the creature are made with advantage for the duration. Youwe knows if they succeeded or failed on their saving throw.

An affected creature is aware of the effect and can thus avoid answering questions to which it would normally respond with a lie. Such a creature can be evasive in its answers as long as the effect lasts

Preternatural Counter. If a creature misses Youww with an attack, he can immediately use his reaction to make a melee attack against that creature.

Mind of Mercury. Youwe can take a number of additional reactions each round equal to his Intelligence modifier (minimum of 1), at the cost of 1 ki point per reaction beyond the first. Youwe can only use one reaction per trigger.

In addition, whenever he makes an Intelligence (Investigation) check, Youwe can spend 1 ki point to gain advantage on the roll.

Debilitating Barrage. Whenever Youwe hits a single creature with three or more attacks in one round, he can spend 3 ki points to cause the creature to suffer a vulnerability to a damage type of your choice for 1 minute, or until after they take any damage of that type.

Creatures with resistance or immunity to the chosen damage type do not suffer vulnerability. Instead, their resistance to the chosen damage type is lost for the duration, or their immunity is reduced to resistance for the duration.

Innate Magic. As an ancient dragon Youwe has access to some magic, he can cast Polymorph and Misty Step 2 times a day.

Love. If Ulhyrr dies Youwe screams in a powerful agonic roar and ends his own life. All creatures that presenced this are frightened until the next rest.

Multiattack. Youwe makes five attacks: two with his bite and three with his claws.

Bite. Melee Weapon Attack:+ 17 to hit, reach 15 ft. , one target. Hit: 18 (2d8 + 10) piercing damage plus 11 (2d10) lightning damage. .

Claw. Melee Weapon Attack: +17 to hit, reach 10 ft., one target. Hit: 14 (2d4 + 10) slashing damage.

Tail. Melee Weapon Attack: +17 to hit, reach 20 ft., one target. Hit: 16 (2d6 + 10) bludgeoning damage.

Lightning Breath (Recharge 5- 6). Youwe exhales lightning in a 120-foot line that is 10 feet wide. Each creature in that line must make a DC 23 Dexterity saving throw, taking 88 (16d10) lightning damage on a fail ed save, or half as much damage on a successful one.

Youwe can use his reaction to stop or deflect the missile when he is hit by a ranged weapon attack. When does so, the damage he take from the attack is reduced by 1d 10 + 30. If this reduces the damage to 0, he can spend 1 ki point to make a ranged attack with the weapon or piece of ammunition he recieved, deflecting it as part of the same reaction.

Youwe 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. Youwe regains spent legendary actions at the start of its turn.

Tail Attack. Youwe makes a tail attack.

Call the wind (Costs 2 Actions). Youwe calls the winds. Each creature within 15 feet of Youwe must succeed on a DC 23 Dexterity saving throw or take 16 (2d6 + 10) bludgeoning damage and be knocked prone. Youwe can then fly at his flying speed.

Steel Body (Costs 3 Actions). Youwe can spend 10 ki points to increase hi AC by 10 until his next turn.