Soul Devour

8-level Necromancy (ritual)

You attempt to consume a creature’s soul to empower yourself. Target creature within range must succeed on a Charisma saving throw or take 100 soul damage, taking half as much on a success. If this damage reduces the target’s hit points to 0 and the creature failed the saving throw, you consume the target’s soul, and the target instantly dies. If you consume the creature's soul in this way, you gain temporary hit points equal half the target creature's hit point maximum. While you have these temporary hit points, you have advantage on attack rolls, ability checks, and saving throws.   A creature whose soul has been consumed in this way cannot be restored to life by any means short of a wish spell.   Creatures that do not have souls, (such as most constructs and zombies) and creatures whose souls are in another location than their body (such as liches) are immune to this spell. Undead that have the Incorporeal Movement trait have disadvantage on the Charisma saving throw.