Soul Harvest
Tier 3 Epic necromancy
Casting Time: 1 action
Range: 30 feet
Components: V, S, M (a lich’s phylactery)
Duration: Concentration, up to 1 minute
You extract the soul of a single creature within range and gain power from its essence. The creature cannot regain hit points for the duration of the spell and has Epic disadvantage on all attack rolls, saving throws, and ability checks. Additionally, the creature cannot be resistant or immune to damage while under the effects of this spell.
Finally, you gain temporary hit points equal to the target’s Constitution score multiplied by ten. If the creature is killed while under the effects of the spell, you consume its soul, learning everything the creature knew, and the creature cannot be restored to life by non- Deific means.
Ref: ELCR p103-104