Chill Touch

You create a ghostly, skeletal hand in the space of a creature within range. Make a ranged spell attack against the creature. On a hit, the target takes 1d8 necrotic damage, and it cannot regain hit points until the start of your next turn. The damage increases to 2d8 at 5th level, 3d8 at 11th level, and 4d8 at 17th level.