Arkhan The Grafted + Scorn

Hand of the Flayer. The hand of the flayer has 8 charges and regains 1d4+4 charges at dawn. Ackhan can cast the following spells through the hand.

At will: levitate, detect thoughts

finger of death (5 charges),  Sleep (1 charge), Teleport (2 charges)

Innate Spellcasting. Ackhan's spellcasting ability is charisma (spell save 17) he can cast the following spells with no componants.

3/day each: animate dead, branding smite (at 4th level), revivify

1/day each: geas, raise dead

Multiattack. Ackhan attacks 3 times

Spark Starter(Battle Axe).  Melee Weapon Attack: +13 to hit, reach 5ft. Hit: 16(1d8+12) slashing damage or 17(1d10+12) slashing damage when two handing, plus 9(2d8) fire damage. If the Ackhan rolls a 20 on the attack roll, the target takes an extra 9(2d8) necrotic damage and Ackhan heals that damage dealt.

Soul Teather. if ackhan is one-handing his the spark-starter, he can use his off hand to attempt to grapple one creature within 10ft of him (strength contest), if target creature loses, it takes 1D8 psychic damage and is linked with ackhan

Linked. target will take all damage done to ackhan as psychic damage, and all the damage done to the target creature will be done to ackhan as psychic damage

Blink. Ackhan can teleport 20ft away from an oncoming attact 

 Ackhan has 3 legendary actions that will reset at the start of his turn

Extinguish Thy Flame (Costs 2 Actions). Ackhan grabs someone in range and drains them of 2D10 psychic damage then explodes with the amount drained as fire damage in a 30ft circle everyone but Ackhan and the drained creature makes a dex save (15) or takes the fire damage in full

Shift (Costs 1 Action). Ackhan teleports to an area of his choosing within 30 ft of him

When Arkhan's HP is reduced to 0, He gains 1 HP and takes his turn immediately, and is forced to do the action below

My Time Is Up. Arkhan flies into the air and his consumed by The Scorn Of Humanity giving it buffs