Deception +13, History +7, Intimidation +13, Investigation +7, Perception +7, Persuasion +18, Stealth +8
Darkvision: 120 ft. Can see through magical darkness.
Sabayon, Kanchelsis Possessed, is a 17th level spellcaster. He uses Charisma to cast spells and determine spell save DC.
Spell Ability Modifier +6, Spell Attack Bonus +14, Spell Save DC 22
4 spell slots at 5th level, as well as one Mystic Arcanum spell for each level of 6th, 7th, 8th, 9th.
Level 1: womp womp
Level 2: Darkness
Level 3: Counterspell, Hypnotic Pattern
Level 4: Dimension Door, Death Ward, Greater Invisibility, Polymorph (SoF)
Level 5: Dream, Teleportation Circle, Seeming, Cloudkill
Eldritch Blast: 4 spell attack rolls that deal 1d10+6 damage per hit. Optionally, Sabayon can have any of the blasts push the target creature 15 feet away from him.
Cantrips: Sapping Sting, Frost Bite, Mind Sliver, Chill Touch, Primal Savagery, Spare the Dying
Tome of Kanchelsis: Alter Self (only in guises of the aliases in the Tome)
(3) Summon Undead, Major Image
(4) Hallucinatory Terrain, Phantasmal Killer
(5) Dominate Person
(6) Circle of Death
(7) Forcecage
(8) Dark Star
(9) Psychic Scream
Grave Touched: Sabayon does not need to eat, drink, or breathe. In addition, once on each of his turns when he hits a creature with an attack and deals damage, he can change that damage type to necrotic and add one additional damage die to the amount of necrotic damage the creature takes.
Aspect of the Moon: Sabayon does not need to sleep.
Spirit Hunger: Once on each of his turns when he deals Necrotic damage, Sabayon can regain hit points equal to half the amount of Necrotic damage dealt.
War Caster: Sabayon has advantage on Constitution ssaving throws to maintain concentration on spells.
Spider Climb: Sabayon has a climbing speed equal to his walking speed and can walk up vertical surfaces and upside down while keeping his hands free.
Legendary Resistance (3/Day): If Sabayon, Kanchelsis Possessed fails a saving throw, he can choose to succeed it instead.
Vampire Weaknesses: While in sunlight, Sabayon, Kanchelsis Possessed has disadvantage on attack rolls and saving throws, and takes 20 radiant damage if he starts his turn in sunlight. If Sabayon, Kanchisis Possessed ends his turn in running water, he takes 20 acid damage.
Magic Resistance: Sabayon, Kanchelsis Possessed has advantage on saving throws against spells and magical effects.
Form of Dread: Once during each of his turns when he hits a creature with an attack, Sabayon, Kanchelsis Possessed can force the target to make a Wisdom saving throw against his spell save DC. On a failure, the target is frightened of him until the end of his next turn.
Wand of Web: Sabayon uses his Wand of Web to cast Web.
Sculptor of flesh: Sabayon can cast Polymorph using a warlock spell slot.
Spells: Eldritch Blast, Sapping Sting, Frost Bite, Mind Sliver, Chill Touch, Primal Savagery, Spare the Dying, Darkness, Hypnotic Pattern, Dimension Door, Death Ward, Greater Invisibility, Seeming, Cloudkill, Summon Undead, Major Image, Phantasmal Killer, Dominate Person
Trickster's Escape: Sabayon can cast Freedom of Movement once without using a spell slot.
Sabayon, Kanchelsis Possessed can make two melee attacks, only one of which can be a bite attack. He can use one of these attacks to instead make a grapple check against a target within his reach.
Bite: Melee Weapon Attack: +9 to hit, reach 5ft., one target. Hit: 1d4+3 Piercing damage plus 3d6 necrotic damage. The hit point maximum of the target is reduced by an amount equal to the necrotic damage taken, and Sabayon regains hit points equal to that amount. This does not stack with Spirit Hunger. The reduction lasts until the end of a long rest. A target dies if its hit points maximum is reduced to 0.
Claw: Melee Weapon Attack: +8 to hit, reach 5ft, one target. Hit: 1d4+2 slashing damage plus 4d6 necrotic damage. If target is a creature, Sabayon can make a grapple check instead of dealing damage.
Vampiric shift: Sabayon, Kanchelsis Possessed can dash as a bonus action.
Vengeful Mist: Sabayon, Kanchelsis Possessed can summon one of the spirits of someone he killed in his patron's name to fight beside him. He can summon the spirit to any space he can see, including next to a hostile creature of his choice. The spirit has the statistics of a Vampiric Mist and rolls its own initiative.
Mark of the Vampire: While holding the Tome of Kanchelsis, Sabayon can use a bonus action to curse a target of his choice for one minute. The curse ends early if the target dies, he dies, or he is incapacitated. Until the curse ends, he gains the following benefits:
Spells: Counterspell
Sabayon, Kanchelsis Possessed, can take 3 legendary actions, chosen from the options below. Only one legendary action can be taken at a time and only at the end of another creature's turn. Sabayon, Kanchelsis Possessed regains spent legendary actions at the start of his turn.
Bat Out of Hell: Sabayon transforms into a tiny bat and can fly up to his speed without taking opportunity attacks. At the end of his movement, he transforms back into his humanoid form.
Catch These Hands: Sabayon makes one Claw attack.
Eldritch Punishment (costs 2 actions): Sabayon casts Eldritch Blast.
The dining hall of Kanchelsis, Demon Lord of Vampires.
When the party rocks up to demand their friend's soul back from their patron and their patron says "lol bet".
Kanchelsis's Layer of the Abyss