Undead Form

Until the spell ends, you take on a ghastly, corpse-like visage and give off an unnatural aura. For the duration, you gain the following benefits:

• Your creature type becomes undead.
• You gain immunity necrotic damage and to the frightened and paralyzed conditions.
• Creatures of your choice that start their turn within 10 feet of you must make a Wisdom saving throw or become frightened of you until the start of their next turn. Undead are immune to this effect.
• You can use your action to drain the life of creatures in a 10-foot cube centered on a point you can see within 60 feet of you. Each creature in that area must make a Constitution saving throw. A creature takes 3d8 necrotic damage on a failed save, or half as much on a successful one. Then, if you dealt damage to at least 1 creature, you regain hit points equal to half the damage dealt to one of them.