Mordenkainen's Lost Notebook

Life Steal

5-level Necromancy

Make a melee spell attack to touch a creature within your reach. On a hit, the target takes 4d10 necrotic damage, and you gain temporary hit points equal to the damage dealt. The temporary hit points last until you finish a short or long rest.
At higher levels: At higher levels: When you cast this spell using a spell slot of 7th level or higher, the damage increases by 1d10 for every two slot levels above 5th.