Consume

Wilt is a second level necromancy spell that lets you consume the life energy of a target. When you touch a target it must make a constitution saving throw vs your spell save DC. On a failed save it takes 2d6 necrotic damage and you gain 2d6 HP. On a success the target takes half damage and you gain the HP it loses. You may cast this at higher levels adding 2d6 for each level above 2 to 8th level. At 9th level the target takes 100 necrotic damage on a failed save and you gain 100 HP, on a success the target takes 50 necrotic damage and you gain 50 HP. (If you deal more damage then the target has you only gain as much HP as the target has)

I didn't know you had a soul...til I ate it-Death Berry the Brave