Count Valentine von Deckleloch, Languished Sitient

Shapechanger. If the languished sitient isn’t in sunlight, he can use his action to polymorph into a giant crocodile, a cloud of mist, or back into his sitient form.

While in giant crocodile form, the languished sitient can’t speak; his swimming speed is 50 feet. His statistics, other than his size and speed, are unchanged. Anything he is wearing transforms with him, but nothing he is carrying does. He reverts to his true form if he dies.

While in mist form, the languished sitient can’t take any actions, speak, or manipulate objects. He is weightless, has a flying speed of 20 feet, can hover, and can enter a hostile creature’s space and stop there. In addition, if air can pass through a space, the mist can do so without squeezing. He has advantage on Strength, Dexterity, and Constitution saving throws, and he is immune to all nonmagical damage, except the damage he takes from sunlight.

Wrath of a Love Sick (Recharges after a Short or Long Rest). If the languished sitient  would be reduced to 0 hit points, he may reset his current hit point total instead to 500 hit points, he recharges his Corporeality Shatter, and he regains any expended uses of Contemporaneous Epoch. Additionally, the languished sitient can now use the options in the "Mythic Actions" section for 1 hour. Award a party an additional 155,000 XP (310,000 XP total) for defeating Count Valintine von Decklelock, Languished Sitient, after his Wrath of a Love Sick activates.

Contemporaneous Epoch (5/Day) When dice are rolled on a creature's turn before the action is resolved, you may change the outcome of any of the dice that creature has rolled.

Misty Escape. When the languished sitient would be reduced to 0 hit points outside his coffin, he may transform into a cloud of mist (as in the Shapechanger trait) instead of falling unconscious, provided that he isn’t in sunlight. If he can’t transform, he falls unconscious.

While he has 0 hit points in mist form, he can’t use his shape change ability, and he must reach his coffin within 2 hours or he reverts to his true form and falls unconscious. Once in his coffin, he reverts to his sitient form. He is then paralyzed until he regains at least 1 hit point. After 1 hour in his coffin with 0 hit points, he regains 1 hit point.

Regeneration. The languished sitient regains 20 hit points at the start of his turn if he has at least 1 hit point and isn’t in sunlight. If he takes radiant damage or damage from holy water, this trait doesn’t function at the start of his next turn.

Spellcasting. The languished sitient can cast the following spells using his charisma as the spell casting ability (spell save DC 24).

At Will: charm person, disguise self, foresight, geas, mage armor

Spider Climb. The Languished Sitient can climb difficult surfaces, including upside down on ceilings, without having to make an ability check.

Sitient Weaknesses. The Languished Sitient has the following flaws:

Home is Where the Heart is. He can’t enter a residence without an invitation from one of the occupants.

Stake to the Ardor. If a piercing weapon made of wood is driven into his Ardor, and is a critical hit, he is paralyzed until the stake is removed.

Sunlight Hypersensitivity. While in sunlight, the languished sitient takes 20 radiant damage at the start of his turn, and he has disadvantage on attack rolls and ability checks.

Multiattack. The languished sitient makes three attacks, only one of which can be a bite attack.

Bite (Vampire Only). Melee Weapon Attack: +19 to hit, reach 5 ft., one creature who is grappled by the vampire, incapacitated, or restrained. Hit: 15 (1d10 + 10) piercing damage plus 55 (10d10) necrotic damage. The target’s hit point maximum is reduced by an amount equal to the necrotic damage taken, and the languished sitient gains temporary hit points equal to that amount. The reduction lasts until the target finishes a long rest. The target dies if its hit point maximum is reduced to 0. A humanoid slain in this way and then buried in the ground rises the following night as a vampire spawn under the languished sitients' control.

Scratch (Vampire Only). Melee Weapon Attack: +19 to hit, reach 5 ft., one target. Hit: 15 (1d10 + 10) slashing damage. If the target is a large or smaller creature, it is grappled (escape DC 20). The languished sitient can have only one creature grappled this way at a time.

Death Roll (Crocodile Only). Melee Weapon Attack: +19 to hit, reach 5 ft., one creature. Hit: 21 (2d10 + 10) piercing damage plus 55 (10d10) necrotic damage. The target’s hit point maximum is reduced by an amount equal to the necrotic damage taken, and the languished sitient gains temporary hit points equal to that amount. The reduction lasts until the target finishes a long rest. The target dies if its hit point maximum is reduced to 0. A humanoid slain in this way and then buried in the ground rises the following night as a vampire spawn under the languished sitients' control. If the target is a large or smaller creature, it is grappled (escape DC 20). The languished sitient can have only one creature grappled this way at a time. This attack cannot be taken if the languished sitient is grappled. On a critical hit, the target gains a point of exhaustion or is under the effect of the slow spell. A target can end this effect with the regeneration spell or a similar effect.

Corporeality Shatter (Recharge 5–6) The languished sitient emits soul-altering effects in a 50-foot circle. Each creature in that area must make a DC 24 Intelligence saving throw. On a failed save, the creature takes 71 (11d12) psychic damage, loses control of their character, and gains control of a character that failed the saving throw of the languished sitient's choice until the beginning of the languished sitient's next turn. On a successful save, the creature takes half as much damage and may gain control of a creature who failed the saving throw until the end of the languished sitient's next turn.

Beguile. The Languished Sitient targets one creature he can see within 30 feet of him and who can see him. The target must make a DC 24 Wisdom saving throw. On a failed save, the creature uses their reaction, if available, to move up to their speed to a location chosen by The Languished Sitient, then either makes a melee attack against a target of The Languished Sitient's choice or falls prone.

Inhuman Agility. The Languished Sititnet moves up to his speed without provoking opportunity attacks.

The languished sitient 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. The languished Sitient regains spent legendary actions at the start of his turn.

Scratch. The languished sitient makes one scratch attack.

Blood Lust (Costs 2 Actions). The languished sitient makes one bite or deathroll attack.

Charm (Costs 3 Actions). The languished sitient casts geas at 9th level

If the languished sitient's Wrath of the Love Sick trait has activated in the last hour, he can use the options below as legendary actions.

Mana Surge. The languished sitient casts one of his spells.

Rip and Tear (Costs 3 Actions). The languished sitient makes one bite deathroll attack. If the attack hits it is considered a critical hit and the languished sitient gains a point of exhaustion