The Lost King

The old king is an Undead born from the energy of chaos, which ressurected him as a newborn Undead master driven by anger and revenge.

Undying Wish

At 3rd level, you gain the ability to withstand and keep fighting when you are supposed to fall. Once per Long Rest, if you take damage that reduces you to 0 hit points, you can spend your reaction to unleash the full power of the caos inside your broken soul. You regain 1 hit point and gain temporary hit points equal to your maximum hit points that lasts for 1 minute. You also lose those temporary hit points if your current hit points are equal to its maximum value.

At the beginning of each of your turns, as long as you still have the temporary hit points granted by this feature, you must roll a number of d6s equal to your level, regaining hit points by an amount equal to the rolled value.

Undying Body

At 7th level, your body gets used to not being alive anymore. You become immune to necrotic and poison damage. You are also immune to the poisoned condition, diseases and your maximum hit points cannot be reduced by any means.

King's Order

At 10th level, you regain your control over your subordinates from your lifetime. As an action, you can summon 4 Undead Knights. Those knights have hit points equal to ten times your proficiency modifier, an AC of 12 plus your proficiency modifier, ability scores equal to 10 plus your proficiency modifier and each one wields a different weapon, which they are proficient with, between a Halberd, a Greatsword, a Greataxe and a Heavy crossbow. They obey any command you give them. They share your resistances and immunities and disappear immediatly when their hit points fall to 0 or when you finish a Long Rest.

You can use this feature once per Long Rest.

The Throne

At 15th level, you learn a magical ritual to summon your throne wherever you are. As a bonus action, you can summon your Throne, which lasts until destroyed or until you use this feature again. It appears on an empty space within 5ft of you. If you end your turn within 30ft of if, you have resistance to all damage until the beginning of your next turn. The Throne has 15 hit points, medium sturdiness, an AC of 5, resistance to all damage and is immune to piercing, necrotic, psychic and poison damage. It cannot be moved by any means other than a Wish spell. Only one Throne can exist at the same time. You can use this feature once per Short Rest.

Strength of a Thousand Man Army

At 18th level, you understand the obligations of being a king when you are at the brink of death. Whenever you trigger your Undying Wish feature, your Strength and Constitution scores are increased to 30, and your Wisdom and Charisma scores to 26 for the rest of the actual combat.