Chancellor Valanthe Liadon (Reborn)

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

Regeneration. The chancellor regains 25 hit points at the start of his turn if he has at least 1 hit point. If the chancellor takes radiant damage or starts its turn in sunlight or running water, it regains 10 hit points from the next use of this trait instead.

Turn Resistance. The chancellor has advantage on saving throws against any effect that turns undead.

Blood Channeling. Whenever the chancellor's current HP is below his max, he can use his own body as an arcane focus. In addition, when casting a spell with a costly component, he can forego the component by taking 1d10 necrotic damage per 50 gp of the cost.

Thicker than water. Whenever a spell or magical effect causes the chancellor to regain HP, he gains an additional +6 HP. Also, when concentrating on a spell, he has immunity to nonmagical bludgeoning, piercing, and slashing damage, and resistance to magical bludgeoning, piercing, and slashing.

Sanguine Burst. Whenever the chancellor rolls damage for a spell 1st level or higher, he can choose to take necrotic damage equal to the spell's level to reroll up to 6 damage dice. He must use the new rolls.

Vampire Weaknesses. The vampire has the following flaws:

Forbiddance. The chancellor can’t enter a residence without an invitation from one of the occupants.

Stake to the Heart. The chancellor dies if a piercing weapon made of wood is driven into its heart while it is incapacitated in its resting place.

Spellcasting. The chancellor is an 14th-level spellcaster. His spellcasting ability is Intelligence (spell save DC 19, +11 to hit with spell attacks). The chancellor has the following wizard spells prepared:

Cantrips (at will): Fire bolt,  chill touch, message, mold earth, prestidigitation, shocking grasp

1st level (4 slots):  detect magic, magic missile, shield (R), longstrider*, unseen servant 

2nd level (3 slots): detect thoughts, knock, misty step (BA), hold person, wither and bloom

3rd level (3 slots): counterspell (R), fireball, dispel magic, haste*, glyph of warding

4th level (3 slots): blight, dimension door, summon elemental, vitriolic sphere

5th level (2 slots): dominate person, hold monster, scrying, synaptic static, wall of force

6th level (1 slot): disintegrate, circle of death, magic jar

7th level (1 slot): finger of death, simulacrum, teleport

*The chancellor casts these spells on himself before combat.

Monstrous Flurry. The chancellor makes a Claws attack, then uses its Bite attack or casts a spell.

Claws. Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 15 (2d8 + 6) slashing damage. If the target is a creature, the chancellor can grapple the target (escape DC 19).

Bite. Melee Weapon Attack: +11 to hit, reach 5 ft., one creature. Hit: 15 (2d8 + 6) piercing damage and 17 (5d6) necrotic damage. The target’s hit point maximum is reduced by an amount equal to the necrotic damage taken, and the vampire regains hit points equal to that amount. This reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hit point maximum to 0. A humanoid slain in this way and then buried rises the following night as a vampire spawn under this chancellor’s control.

Mist Form. The chancellor polymorphs into a Medium cloud of mist, or back into its true form. Anything it wears or carries transforms with it. While in mist form, the chancellor can’t take any actions, speak, or manipulate objects. It is weightless, has a flying speed of 300 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, but it can’t pass through water. It has advantage on Strength, Dexterity, and Constitution saving throws. The chancellor in mist form is immune to all damage, except it loses immunity to radiant damage if it is in sunlight. The vampire reverts to its true form if it dies.

Fey Majesty. The chancellor targets one creature it can see within 30 feet of it. If the target can see or hear the vampire, the target must succeed on a DC 18 Charisma saving throw or be charmed. The charmed target regards the chancellor as a friend to be heeded and protected. Although not under the chancellor’s control, it takes the chancellor’s requests in the most favorable way and is a willing target for the chancellor’s bite.

While the target is charmed, the chancellor can communicate with the target telepathically within 300 feet. The chancellor can use a bonus action to force the target to repeat the saving throw. If the save fails, the chancelllor can render the creature full of despair (disadvantage on ability checks and attack rolls) or confused (as the confusion spell) for 1 minute. The creature can repeat the saving throw at the end of each of its turns, ending the despair or confusion on itself on a success.

Each time the chancellor or the chancellor’s allies do anything harmful to the target, it can repeat the saving throw, ending the effect on a success. Otherwise, the effect lasts 24 hours or until the vampire dies, is on a different plane of existence than the target, or takes a bonus action to end the effect.

Misty Escape. When he drops to 0 hit points outside its resting place, the chancellor transforms into its Mist Form instead of falling unconscious. If the chancellor can’t transform, he dies.

While he has 0 hit points in mist form, the chancellor dies if he takes radiant damage three times. He can’t willingly revert to his vampire form, and he must reach his resting place within 5 hours or die. Once in his resting place, it reverts to its vampire form. It is then paralyzed until it regains at least 1 hit point. After spending 1 hour in its resting place with 0 hit points, it regains 1 hit point.

Bond of Mutual Suffering (2/rest). When a creature the chancellor can see hits him with an attack, he can force the attacker to take damage equal to the damage the chancellor  took. This feature cannot be used against constructs or undead.

Glyph of Hemorrhaging (1/rest). When the chancellor damages a creature with a spell, he can choose to curse that creature for 1 minute. While cursed in this way, whenever the creature is hit by an attack, it takes an extra 1d6 necrotic damage. At the end of each of the creature’s turns, it can make a Constitution saving throw (DC 19), ending the curse on a success. This feature cannot be used against creatures that are undead or constructs.

The chancellor can take 3 legendary actions, choosing from the options here. Only one legendary action option can be used at a time and only at the end of another creature’s turn. The chancellor regains spent legendary actions at the start of its turn.

Extra Reaction. The chancellor can expend a legendary action to make an additional reaction before its next turn.

Lunge. The chancellor moves up to half its speed and makes one bite attack.

Purify Blood. Even if the chancellor can’t take actions, one condition ends on him.