Vampiric Sybik

Legendary Resistance (3/Day, or 4/Day in Lair). If Sybik fails a saving throw, he can choose to succeed instead.

Misty Escape. If Sybik drops to 0 Hit Points outside his resting place, he uses Shape-Shift to become mist (no action required). If he can’t use Shape-Shift, he is destroyed.

While he has 0 Hit Points in mist form, he can’t return to his vampire form, doesn't benefit from his regeneration trait, and he must reach his resting place within 2 hours or be destroyed. Once in his resting place, he returns to his vampire form and has the Paralyzed condition until he regains any Hit Points, and he regains 1 Hit Point after spending 1 hour there.

Spider Climb. Sybik can climb walls, along ceiling and any other difficult surfaces, without needing to make an ability check. His climb speed is equal to his walking speed.

Children of the Night (1/Day). Sybik magically calls 2d4 swarms of bats or rats, provided that the sun isn’t up. While outdoors, Sybik can call 3d6 wolves instead. The called creatures arrive in 1d4 rounds, acting as allies and obeying his commands. The beasts remain for 1 hour, until Sybik dies, or until he dismisses them as a bonus action.

Attack Advantage. Sybik has Advantage on attack rolls against a creature that is Grappled by him.

Expert Grappler. Sybik does not have to spend extra movement to move a creature Grappled by him if the creature is his size or smaller. 

Regeneration. Sybik 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 this trait doesn’t function at the start of his next turn.

Deathless Nature. Sybik does not breathe unless he chooses to do so.

Vampire Weakness. Sybik has these weaknesses:

Forbiddance. Sybik can’t enter a residence without an invitation from an occupant.

Stake to the Heart. If a weapon that deals Piercing damage is driven into his heart while he has the Incapacitated condition in his resting place, the vampire has the Paralyzed condition until the weapon is removed.

Sunlight. Sybik takes 20 Radiant damage if he starts his turn in sunlight. While in sunlight, he has Disadvantage on attack rolls and ability checks.

Multiattack (Vampire Form Only). Sybik makes two Grave Strike attacks per turn and one Bite attack.

Grave Strike (Vampire Form Only). Melee Attack Roll: +9, reach 5 ft. Hit: 8 (1d8 + 4) Force damage plus 7 (2d6) Necrotic damage. If the target is a Large or smaller creature, it has the Grappled condition (escape DC 14) from one of two hands.

Bite (Bat or Vampire Form Only). Constitution Saving Throw: DC 17, one creature within 5 feet that is willing or that has the Grappled, Incapacitated, or Restrained condition. Failure: 10 (1d8 + 4) Piercing damage plus 13 (3d8) Necrotic damage. The target’s Hit Point maximum decreases by an amount equal to the Necrotic damage taken, and Sybik regains Hit Points equal to that amount. A Humanoid reduced to 0 Hit Points by this damage and then buried rises the following sunset as a Vampire Spawn under Sybik's control.

Vampiric Daze. Once per turn Sybik can cause a target successfully hit by his grave strike or bite attack to be forced to make a DC 17 Constitution saving throw. If the target fails their movement speed is halved and they cannot take a reaction until the end of Sybik's next turn. If the target succeeds they suffer no effect.

Heal the Sick. Sybik can attempt a Medicine check on a creature within 5ft. The higher Sybik's resulting Medicine check determines the potency of this healing. A Medicine check DC 10 gives the target 1d4 HP, DC 15 gives 2d4, DC 20 gives 3d4, DC 25 gives 4d4. The creature targeted by this action can only benefit from this feature once per long rest.

Charm (Recharge 5–6). Sybik casts Charm Person, requiring no spell components and using Wisdom as the spellcasting ability (spell save DC 17), and the duration is 24 hours. The Charmed target is a willing recipient of Sybik's Bite, the damage of which doesn’t end the spell. When the spell ends, the target is unaware it was Charmed.

Shape-Shift. If Sybik isn’t in sunlight he shape-shifts into a small swarm of bats (Speed 15 ft., Fly Speed 40 ft.) or a medium cloud of mist (Speed 5 ft., Fly Speed 30 ft. [hover]), or he returns to his vampire form. Anything he is wearing transforms with him.

While in bat form, Sybik can’t speak. His game statistics, other than his size and Speed, are unchanged.

While in mist form, Sybik can’t take any actions, speak, or manipulate objects. He is weightless and can enter an enemy’s space and stop there. If air can pass through a space, the mist can do so, but it can’t pass through liquid. It has Resistance to all damage, except the damage it takes from sunlight.

Step of the Wind. Sybik can take the Dash action and Disengage action as a single Bonus Action. This bonus action also doubles his jump distance for the remainder of his turn. 

Vampiric Reflexes. Sybik can make an additional Grave strike attack as a Bonus Action. 

Deflect Attack. When an attack roll hits Sybik and its damage includes Bludgeoning, Piercing, or Slashing damage, he can take a Reaction to reduce the attack’s total damage. The reduction equals 1d10 plus 10.  

Slow Fall. Sybik can take a Reaction when he falls to reduce any damage he would take from the fall by 30.

Legendary Action Uses: 3 (4 in Lair). Immediately after another creature’s turn, Sybik can expend a use to take one of the following actions. Sybik regains all expended uses at the start of each of his turns.

Beguile. Sybik casts Command, requiring no spell components and using Wisdom as the spellcasting ability (spell save DC 17). Sybik can’t take this action again until the start of his next turn.

Deathless Strike. Sybik moves up to half his Speed, and he makes one Grave Strike attack.