Black hand

Your hands become deathly black and appear to drain light within a small area around them. Make a melee spell attack against a creature in attempt to drain it's life force. On a hit, the target takes 1d10 necrotic damage and it can't regain hit points until the start of your next turn.

If you hit an undead target, it also has disadvantage on attack rolls against you until the end of your next turn.

This spell's damage increases by 1d10 when you reach 5th level (2d10), 11th level (3d10), and 17th level (4d810).